summaryrefslogtreecommitdiffstats
path: root/net/batman-adv
diff options
context:
space:
mode:
authorDavid S. Miller <davem@davemloft.net>2016-07-05 02:33:59 -0400
committerDavid S. Miller <davem@davemloft.net>2016-07-05 02:33:59 -0400
commitb77af26a790a2ecfdd4109a3b1328499ea988181 (patch)
tree6e192798c8d05bfc04d27aa94dc51a6407801c63 /net/batman-adv
parent5ee389751922a497d38c4750c5cbe6223873c24c (diff)
parent29824a55c07cd79a530d4bc1020a529c402515b6 (diff)
Merge tag 'batadv-next-for-davem-20160704' of git://git.open-mesh.org/linux-merge
Simon Wunderlich says: ==================== This feature patchset includes the following changes: - Cleanup work by Markus Pargmann and Sven Eckelmann (six patches) - Initial Netlink support by Matthias Schiffer (two patches) - Throughput Meter implementation by Antonio Quartulli, a kernel-space traffic generator to estimate link speeds. This feature is useful on low-end WiFi APs where running iperf or netperf from userspace gives wrong results due to heavy userspace/kernelspace overhead. (two patches) - API clean-up work by Antonio Quartulli (one patch) ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/batman-adv')
-rw-r--r--net/batman-adv/Makefile5
-rw-r--r--net/batman-adv/bat_algo.c140
-rw-r--r--net/batman-adv/bat_algo.h35
-rw-r--r--net/batman-adv/bat_iv_ogm.c40
-rw-r--r--net/batman-adv/bat_iv_ogm.h25
-rw-r--r--net/batman-adv/bat_v.c29
-rw-r--r--net/batman-adv/bat_v.h52
-rw-r--r--net/batman-adv/bat_v_elp.c3
-rw-r--r--net/batman-adv/bat_v_elp.h4
-rw-r--r--net/batman-adv/bat_v_ogm.c5
-rw-r--r--net/batman-adv/bat_v_ogm.h4
-rw-r--r--net/batman-adv/bitarray.c2
-rw-r--r--net/batman-adv/bridge_loop_avoidance.c1
-rw-r--r--net/batman-adv/debugfs.c217
-rw-r--r--net/batman-adv/distributed-arp-table.c2
-rw-r--r--net/batman-adv/fragmentation.c41
-rw-r--r--net/batman-adv/fragmentation.h6
-rw-r--r--net/batman-adv/gateway_client.c1
-rw-r--r--net/batman-adv/gateway_common.c4
-rw-r--r--net/batman-adv/hard-interface.c21
-rw-r--r--net/batman-adv/icmp_socket.c1
-rw-r--r--net/batman-adv/log.c231
-rw-r--r--net/batman-adv/log.h111
-rw-r--r--net/batman-adv/main.c707
-rw-r--r--net/batman-adv/main.h121
-rw-r--r--net/batman-adv/multicast.c2
-rw-r--r--net/batman-adv/netlink.c424
-rw-r--r--net/batman-adv/netlink.h32
-rw-r--r--net/batman-adv/network-coding.c2
-rw-r--r--net/batman-adv/originator.c51
-rw-r--r--net/batman-adv/packet.h54
-rw-r--r--net/batman-adv/routing.c43
-rw-r--r--net/batman-adv/send.c39
-rw-r--r--net/batman-adv/soft-interface.c3
-rw-r--r--net/batman-adv/sysfs.c7
-rw-r--r--net/batman-adv/tp_meter.c1507
-rw-r--r--net/batman-adv/tp_meter.h34
-rw-r--r--net/batman-adv/translation-table.c8
-rw-r--r--net/batman-adv/tvlv.c632
-rw-r--r--net/batman-adv/tvlv.h61
-rw-r--r--net/batman-adv/types.h226
41 files changed, 3716 insertions, 1217 deletions
diff --git a/net/batman-adv/Makefile b/net/batman-adv/Makefile
index 797cf2fc88c1..a83fc6c58d19 100644
--- a/net/batman-adv/Makefile
+++ b/net/batman-adv/Makefile
@@ -17,6 +17,7 @@
17# 17#
18 18
19obj-$(CONFIG_BATMAN_ADV) += batman-adv.o 19obj-$(CONFIG_BATMAN_ADV) += batman-adv.o
20batman-adv-y += bat_algo.o
20batman-adv-y += bat_iv_ogm.o 21batman-adv-y += bat_iv_ogm.o
21batman-adv-$(CONFIG_BATMAN_ADV_BATMAN_V) += bat_v.o 22batman-adv-$(CONFIG_BATMAN_ADV_BATMAN_V) += bat_v.o
22batman-adv-$(CONFIG_BATMAN_ADV_BATMAN_V) += bat_v_elp.o 23batman-adv-$(CONFIG_BATMAN_ADV_BATMAN_V) += bat_v_elp.o
@@ -31,12 +32,16 @@ batman-adv-y += gateway_common.o
31batman-adv-y += hard-interface.o 32batman-adv-y += hard-interface.o
32batman-adv-y += hash.o 33batman-adv-y += hash.o
33batman-adv-y += icmp_socket.o 34batman-adv-y += icmp_socket.o
35batman-adv-$(CONFIG_BATMAN_ADV_DEBUG) += log.o
34batman-adv-y += main.o 36batman-adv-y += main.o
35batman-adv-$(CONFIG_BATMAN_ADV_MCAST) += multicast.o 37batman-adv-$(CONFIG_BATMAN_ADV_MCAST) += multicast.o
38batman-adv-y += netlink.o
36batman-adv-$(CONFIG_BATMAN_ADV_NC) += network-coding.o 39batman-adv-$(CONFIG_BATMAN_ADV_NC) += network-coding.o
37batman-adv-y += originator.o 40batman-adv-y += originator.o
38batman-adv-y += routing.o 41batman-adv-y += routing.o
39batman-adv-y += send.o 42batman-adv-y += send.o
40batman-adv-y += soft-interface.o 43batman-adv-y += soft-interface.o
41batman-adv-y += sysfs.o 44batman-adv-y += sysfs.o
45batman-adv-y += tp_meter.o
42batman-adv-y += translation-table.o 46batman-adv-y += translation-table.o
47batman-adv-y += tvlv.o
diff --git a/net/batman-adv/bat_algo.c b/net/batman-adv/bat_algo.c
new file mode 100644
index 000000000000..81dbbf569bd4
--- /dev/null
+++ b/net/batman-adv/bat_algo.c
@@ -0,0 +1,140 @@
1/* Copyright (C) 2007-2016 B.A.T.M.A.N. contributors:
2 *
3 * Marek Lindner, Simon Wunderlich
4 *
5 * This program is free software; you can redistribute it and/or
6 * modify it under the terms of version 2 of the GNU General Public
7 * License as published by the Free Software Foundation.
8 *
9 * This program is distributed in the hope that it will be useful, but
10 * WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * General Public License for more details.
13 *
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, see <http://www.gnu.org/licenses/>.
16 */
17
18#include "main.h"
19
20#include <linux/errno.h>
21#include <linux/list.h>
22#include <linux/moduleparam.h>
23#include <linux/printk.h>
24#include <linux/seq_file.h>
25#include <linux/stddef.h>
26#include <linux/string.h>
27
28#include "bat_algo.h"
29
30char batadv_routing_algo[20] = "BATMAN_IV";
31static struct hlist_head batadv_algo_list;
32
33/**
34 * batadv_algo_init - Initialize batman-adv algorithm management data structures
35 */
36void batadv_algo_init(void)
37{
38 INIT_HLIST_HEAD(&batadv_algo_list);
39}
40
41static struct batadv_algo_ops *batadv_algo_get(char *name)
42{
43 struct batadv_algo_ops *bat_algo_ops = NULL, *bat_algo_ops_tmp;
44
45 hlist_for_each_entry(bat_algo_ops_tmp, &batadv_algo_list, list) {
46 if (strcmp(bat_algo_ops_tmp->name, name) != 0)
47 continue;
48
49 bat_algo_ops = bat_algo_ops_tmp;
50 break;
51 }
52
53 return bat_algo_ops;
54}
55
56int batadv_algo_register(struct batadv_algo_ops *bat_algo_ops)
57{
58 struct batadv_algo_ops *bat_algo_ops_tmp;
59
60 bat_algo_ops_tmp = batadv_algo_get(bat_algo_ops->name);
61 if (bat_algo_ops_tmp) {
62 pr_info("Trying to register already registered routing algorithm: %s\n",
63 bat_algo_ops->name);
64 return -EEXIST;
65 }
66
67 /* all algorithms must implement all ops (for now) */
68 if (!bat_algo_ops->iface.enable ||
69 !bat_algo_ops->iface.disable ||
70 !bat_algo_ops->iface.update_mac ||
71 !bat_algo_ops->iface.primary_set ||
72 !bat_algo_ops->neigh.cmp ||
73 !bat_algo_ops->neigh.is_similar_or_better) {
74 pr_info("Routing algo '%s' does not implement required ops\n",
75 bat_algo_ops->name);
76 return -EINVAL;
77 }
78
79 INIT_HLIST_NODE(&bat_algo_ops->list);
80 hlist_add_head(&bat_algo_ops->list, &batadv_algo_list);
81
82 return 0;
83}
84
85int batadv_algo_select(struct batadv_priv *bat_priv, char *name)
86{
87 struct batadv_algo_ops *bat_algo_ops;
88
89 bat_algo_ops = batadv_algo_get(name);
90 if (!bat_algo_ops)
91 return -EINVAL;
92
93 bat_priv->algo_ops = bat_algo_ops;
94
95 return 0;
96}
97
98int batadv_algo_seq_print_text(struct seq_file *seq, void *offset)
99{
100 struct batadv_algo_ops *bat_algo_ops;
101
102 seq_puts(seq, "Available routing algorithms:\n");
103
104 hlist_for_each_entry(bat_algo_ops, &batadv_algo_list, list) {
105 seq_printf(seq, " * %s\n", bat_algo_ops->name);
106 }
107
108 return 0;
109}
110
111static int batadv_param_set_ra(const char *val, const struct kernel_param *kp)
112{
113 struct batadv_algo_ops *bat_algo_ops;
114 char *algo_name = (char *)val;
115 size_t name_len = strlen(algo_name);
116
117 if (name_len > 0 && algo_name[name_len - 1] == '\n')
118 algo_name[name_len - 1] = '\0';
119
120 bat_algo_ops = batadv_algo_get(algo_name);
121 if (!bat_algo_ops) {
122 pr_err("Routing algorithm '%s' is not supported\n", algo_name);
123 return -EINVAL;
124 }
125
126 return param_set_copystring(algo_name, kp);
127}
128
129static const struct kernel_param_ops batadv_param_ops_ra = {
130 .set = batadv_param_set_ra,
131 .get = param_get_string,
132};
133
134static struct kparam_string batadv_param_string_ra = {
135 .maxlen = sizeof(batadv_routing_algo),
136 .string = batadv_routing_algo,
137};
138
139module_param_cb(routing_algo, &batadv_param_ops_ra, &batadv_param_string_ra,
140 0644);
diff --git a/net/batman-adv/bat_algo.h b/net/batman-adv/bat_algo.h
index 36542962de7d..860d773dd8fa 100644
--- a/net/batman-adv/bat_algo.h
+++ b/net/batman-adv/bat_algo.h
@@ -20,35 +20,16 @@
20 20
21#include "main.h" 21#include "main.h"
22 22
23int batadv_iv_init(void); 23#include <linux/types.h>
24 24
25#ifdef CONFIG_BATMAN_ADV_BATMAN_V 25struct seq_file;
26 26
27int batadv_v_init(void); 27extern char batadv_routing_algo[];
28void batadv_v_hardif_init(struct batadv_hard_iface *hardif); 28extern struct list_head batadv_hardif_list;
29int batadv_v_mesh_init(struct batadv_priv *bat_priv);
30void batadv_v_mesh_free(struct batadv_priv *bat_priv);
31 29
32#else 30void batadv_algo_init(void);
33 31int batadv_algo_register(struct batadv_algo_ops *bat_algo_ops);
34static inline int batadv_v_init(void) 32int batadv_algo_select(struct batadv_priv *bat_priv, char *name);
35{ 33int batadv_algo_seq_print_text(struct seq_file *seq, void *offset);
36 return 0;
37}
38
39static inline void batadv_v_hardif_init(struct batadv_hard_iface *hardif)
40{
41}
42
43static inline int batadv_v_mesh_init(struct batadv_priv *bat_priv)
44{
45 return 0;
46}
47
48static inline void batadv_v_mesh_free(struct batadv_priv *bat_priv)
49{
50}
51
52#endif /* CONFIG_BATMAN_ADV_BATMAN_V */
53 34
54#endif /* _NET_BATMAN_ADV_BAT_ALGO_H_ */ 35#endif /* _NET_BATMAN_ADV_BAT_ALGO_H_ */
diff --git a/net/batman-adv/bat_iv_ogm.c b/net/batman-adv/bat_iv_ogm.c
index 4815db978c27..19b0abd6c640 100644
--- a/net/batman-adv/bat_iv_ogm.c
+++ b/net/batman-adv/bat_iv_ogm.c
@@ -15,7 +15,7 @@
15 * along with this program; if not, see <http://www.gnu.org/licenses/>. 15 * along with this program; if not, see <http://www.gnu.org/licenses/>.
16 */ 16 */
17 17
18#include "bat_algo.h" 18#include "bat_iv_ogm.h"
19#include "main.h" 19#include "main.h"
20 20
21#include <linux/atomic.h> 21#include <linux/atomic.h>
@@ -31,8 +31,8 @@
31#include <linux/init.h> 31#include <linux/init.h>
32#include <linux/jiffies.h> 32#include <linux/jiffies.h>
33#include <linux/kernel.h> 33#include <linux/kernel.h>
34#include <linux/list.h>
35#include <linux/kref.h> 34#include <linux/kref.h>
35#include <linux/list.h>
36#include <linux/lockdep.h> 36#include <linux/lockdep.h>
37#include <linux/netdevice.h> 37#include <linux/netdevice.h>
38#include <linux/pkt_sched.h> 38#include <linux/pkt_sched.h>
@@ -49,15 +49,18 @@
49#include <linux/types.h> 49#include <linux/types.h>
50#include <linux/workqueue.h> 50#include <linux/workqueue.h>
51 51
52#include "bat_algo.h"
52#include "bitarray.h" 53#include "bitarray.h"
53#include "hard-interface.h" 54#include "hard-interface.h"
54#include "hash.h" 55#include "hash.h"
56#include "log.h"
55#include "network-coding.h" 57#include "network-coding.h"
56#include "originator.h" 58#include "originator.h"
57#include "packet.h" 59#include "packet.h"
58#include "routing.h" 60#include "routing.h"
59#include "send.h" 61#include "send.h"
60#include "translation-table.h" 62#include "translation-table.h"
63#include "tvlv.h"
61 64
62static void batadv_iv_send_outstanding_bat_ogm_packet(struct work_struct *work); 65static void batadv_iv_send_outstanding_bat_ogm_packet(struct work_struct *work);
63 66
@@ -1850,8 +1853,7 @@ static int batadv_iv_ogm_receive(struct sk_buff *skb,
1850 /* did we receive a B.A.T.M.A.N. IV OGM packet on an interface 1853 /* did we receive a B.A.T.M.A.N. IV OGM packet on an interface
1851 * that does not have B.A.T.M.A.N. IV enabled ? 1854 * that does not have B.A.T.M.A.N. IV enabled ?
1852 */ 1855 */
1853 if (bat_priv->bat_algo_ops->bat_iface_enable != 1856 if (bat_priv->algo_ops->iface.enable != batadv_iv_ogm_iface_enable)
1854 batadv_iv_ogm_iface_enable)
1855 return NET_RX_DROP; 1857 return NET_RX_DROP;
1856 1858
1857 batadv_inc_counter(bat_priv, BATADV_CNT_MGMT_RX); 1859 batadv_inc_counter(bat_priv, BATADV_CNT_MGMT_RX);
@@ -2117,18 +2119,24 @@ static void batadv_iv_iface_activate(struct batadv_hard_iface *hard_iface)
2117 2119
2118static struct batadv_algo_ops batadv_batman_iv __read_mostly = { 2120static struct batadv_algo_ops batadv_batman_iv __read_mostly = {
2119 .name = "BATMAN_IV", 2121 .name = "BATMAN_IV",
2120 .bat_iface_activate = batadv_iv_iface_activate, 2122 .iface = {
2121 .bat_iface_enable = batadv_iv_ogm_iface_enable, 2123 .activate = batadv_iv_iface_activate,
2122 .bat_iface_disable = batadv_iv_ogm_iface_disable, 2124 .enable = batadv_iv_ogm_iface_enable,
2123 .bat_iface_update_mac = batadv_iv_ogm_iface_update_mac, 2125 .disable = batadv_iv_ogm_iface_disable,
2124 .bat_primary_iface_set = batadv_iv_ogm_primary_iface_set, 2126 .update_mac = batadv_iv_ogm_iface_update_mac,
2125 .bat_neigh_cmp = batadv_iv_ogm_neigh_cmp, 2127 .primary_set = batadv_iv_ogm_primary_iface_set,
2126 .bat_neigh_is_similar_or_better = batadv_iv_ogm_neigh_is_sob, 2128 },
2127 .bat_neigh_print = batadv_iv_neigh_print, 2129 .neigh = {
2128 .bat_orig_print = batadv_iv_ogm_orig_print, 2130 .cmp = batadv_iv_ogm_neigh_cmp,
2129 .bat_orig_free = batadv_iv_ogm_orig_free, 2131 .is_similar_or_better = batadv_iv_ogm_neigh_is_sob,
2130 .bat_orig_add_if = batadv_iv_ogm_orig_add_if, 2132 .print = batadv_iv_neigh_print,
2131 .bat_orig_del_if = batadv_iv_ogm_orig_del_if, 2133 },
2134 .orig = {
2135 .print = batadv_iv_ogm_orig_print,
2136 .free = batadv_iv_ogm_orig_free,
2137 .add_if = batadv_iv_ogm_orig_add_if,
2138 .del_if = batadv_iv_ogm_orig_del_if,
2139 },
2132}; 2140};
2133 2141
2134int __init batadv_iv_init(void) 2142int __init batadv_iv_init(void)
diff --git a/net/batman-adv/bat_iv_ogm.h b/net/batman-adv/bat_iv_ogm.h
new file mode 100644
index 000000000000..b9f3550faaf7
--- /dev/null
+++ b/net/batman-adv/bat_iv_ogm.h
@@ -0,0 +1,25 @@
1/* Copyright (C) 2007-2016 B.A.T.M.A.N. contributors:
2 *
3 * Marek Lindner, Simon Wunderlich
4 *
5 * This program is free software; you can redistribute it and/or
6 * modify it under the terms of version 2 of the GNU General Public
7 * License as published by the Free Software Foundation.
8 *
9 * This program is distributed in the hope that it will be useful, but
10 * WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * General Public License for more details.
13 *
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, see <http://www.gnu.org/licenses/>.
16 */
17
18#ifndef _BATMAN_ADV_BATADV_IV_OGM_H_
19#define _BATMAN_ADV_BATADV_IV_OGM_H_
20
21#include "main.h"
22
23int batadv_iv_init(void);
24
25#endif /* _BATMAN_ADV_BATADV_IV_OGM_H_ */
diff --git a/net/batman-adv/bat_v.c b/net/batman-adv/bat_v.c
index c2fea812fb48..0366cbf5e444 100644
--- a/net/batman-adv/bat_v.c
+++ b/net/batman-adv/bat_v.c
@@ -15,7 +15,7 @@
15 * along with this program; if not, see <http://www.gnu.org/licenses/>. 15 * along with this program; if not, see <http://www.gnu.org/licenses/>.
16 */ 16 */
17 17
18#include "bat_algo.h" 18#include "bat_v.h"
19#include "main.h" 19#include "main.h"
20 20
21#include <linux/atomic.h> 21#include <linux/atomic.h>
@@ -31,6 +31,7 @@
31#include <linux/types.h> 31#include <linux/types.h>
32#include <linux/workqueue.h> 32#include <linux/workqueue.h>
33 33
34#include "bat_algo.h"
34#include "bat_v_elp.h" 35#include "bat_v_elp.h"
35#include "bat_v_ogm.h" 36#include "bat_v_ogm.h"
36#include "hard-interface.h" 37#include "hard-interface.h"
@@ -321,16 +322,22 @@ err_ifinfo1:
321 322
322static struct batadv_algo_ops batadv_batman_v __read_mostly = { 323static struct batadv_algo_ops batadv_batman_v __read_mostly = {
323 .name = "BATMAN_V", 324 .name = "BATMAN_V",
324 .bat_iface_activate = batadv_v_iface_activate, 325 .iface = {
325 .bat_iface_enable = batadv_v_iface_enable, 326 .activate = batadv_v_iface_activate,
326 .bat_iface_disable = batadv_v_iface_disable, 327 .enable = batadv_v_iface_enable,
327 .bat_iface_update_mac = batadv_v_iface_update_mac, 328 .disable = batadv_v_iface_disable,
328 .bat_primary_iface_set = batadv_v_primary_iface_set, 329 .update_mac = batadv_v_iface_update_mac,
329 .bat_hardif_neigh_init = batadv_v_hardif_neigh_init, 330 .primary_set = batadv_v_primary_iface_set,
330 .bat_orig_print = batadv_v_orig_print, 331 },
331 .bat_neigh_cmp = batadv_v_neigh_cmp, 332 .neigh = {
332 .bat_neigh_is_similar_or_better = batadv_v_neigh_is_sob, 333 .hardif_init = batadv_v_hardif_neigh_init,
333 .bat_neigh_print = batadv_v_neigh_print, 334 .cmp = batadv_v_neigh_cmp,
335 .is_similar_or_better = batadv_v_neigh_is_sob,
336 .print = batadv_v_neigh_print,
337 },
338 .orig = {
339 .print = batadv_v_orig_print,
340 },
334}; 341};
335 342
336/** 343/**
diff --git a/net/batman-adv/bat_v.h b/net/batman-adv/bat_v.h
new file mode 100644
index 000000000000..83b77639729e
--- /dev/null
+++ b/net/batman-adv/bat_v.h
@@ -0,0 +1,52 @@
1/* Copyright (C) 2011-2016 B.A.T.M.A.N. contributors:
2 *
3 * Marek Lindner, Linus Lüssing
4 *
5 * This program is free software; you can redistribute it and/or
6 * modify it under the terms of version 2 of the GNU General Public
7 * License as published by the Free Software Foundation.
8 *
9 * This program is distributed in the hope that it will be useful, but
10 * WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * General Public License for more details.
13 *
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, see <http://www.gnu.org/licenses/>.
16 */
17
18#ifndef _NET_BATMAN_ADV_BAT_V_H_
19#define _NET_BATMAN_ADV_BAT_V_H_
20
21#include "main.h"
22
23#ifdef CONFIG_BATMAN_ADV_BATMAN_V
24
25int batadv_v_init(void);
26void batadv_v_hardif_init(struct batadv_hard_iface *hardif);
27int batadv_v_mesh_init(struct batadv_priv *bat_priv);
28void batadv_v_mesh_free(struct batadv_priv *bat_priv);
29
30#else
31
32static inline int batadv_v_init(void)
33{
34 return 0;
35}
36
37static inline void batadv_v_hardif_init(struct batadv_hard_iface *hardif)
38{
39}
40
41static inline int batadv_v_mesh_init(struct batadv_priv *bat_priv)
42{
43 return 0;
44}
45
46static inline void batadv_v_mesh_free(struct batadv_priv *bat_priv)
47{
48}
49
50#endif /* CONFIG_BATMAN_ADV_BATMAN_V */
51
52#endif /* _NET_BATMAN_ADV_BAT_V_H_ */
diff --git a/net/batman-adv/bat_v_elp.c b/net/batman-adv/bat_v_elp.c
index cf0262becd08..7d170010beb9 100644
--- a/net/batman-adv/bat_v_elp.c
+++ b/net/batman-adv/bat_v_elp.c
@@ -43,6 +43,7 @@
43#include "bat_algo.h" 43#include "bat_algo.h"
44#include "bat_v_ogm.h" 44#include "bat_v_ogm.h"
45#include "hard-interface.h" 45#include "hard-interface.h"
46#include "log.h"
46#include "originator.h" 47#include "originator.h"
47#include "packet.h" 48#include "packet.h"
48#include "routing.h" 49#include "routing.h"
@@ -503,7 +504,7 @@ int batadv_v_elp_packet_recv(struct sk_buff *skb,
503 /* did we receive a B.A.T.M.A.N. V ELP packet on an interface 504 /* did we receive a B.A.T.M.A.N. V ELP packet on an interface
504 * that does not have B.A.T.M.A.N. V ELP enabled ? 505 * that does not have B.A.T.M.A.N. V ELP enabled ?
505 */ 506 */
506 if (strcmp(bat_priv->bat_algo_ops->name, "BATMAN_V") != 0) 507 if (strcmp(bat_priv->algo_ops->name, "BATMAN_V") != 0)
507 return NET_RX_DROP; 508 return NET_RX_DROP;
508 509
509 elp_packet = (struct batadv_elp_packet *)skb->data; 510 elp_packet = (struct batadv_elp_packet *)skb->data;
diff --git a/net/batman-adv/bat_v_elp.h b/net/batman-adv/bat_v_elp.h
index cc130b2d05e5..be17c0b1369e 100644
--- a/net/batman-adv/bat_v_elp.h
+++ b/net/batman-adv/bat_v_elp.h
@@ -15,11 +15,11 @@
15 * along with this program; if not, see <http://www.gnu.org/licenses/>. 15 * along with this program; if not, see <http://www.gnu.org/licenses/>.
16 */ 16 */
17 17
18#include "main.h"
19
20#ifndef _NET_BATMAN_ADV_BAT_V_ELP_H_ 18#ifndef _NET_BATMAN_ADV_BAT_V_ELP_H_
21#define _NET_BATMAN_ADV_BAT_V_ELP_H_ 19#define _NET_BATMAN_ADV_BAT_V_ELP_H_
22 20
21#include "main.h"
22
23struct sk_buff; 23struct sk_buff;
24struct work_struct; 24struct work_struct;
25 25
diff --git a/net/batman-adv/bat_v_ogm.c b/net/batman-adv/bat_v_ogm.c
index 23ea9bfb9f67..6fbba4eb0617 100644
--- a/net/batman-adv/bat_v_ogm.c
+++ b/net/batman-adv/bat_v_ogm.c
@@ -39,13 +39,16 @@
39#include <linux/types.h> 39#include <linux/types.h>
40#include <linux/workqueue.h> 40#include <linux/workqueue.h>
41 41
42#include "bat_algo.h"
42#include "hard-interface.h" 43#include "hard-interface.h"
43#include "hash.h" 44#include "hash.h"
45#include "log.h"
44#include "originator.h" 46#include "originator.h"
45#include "packet.h" 47#include "packet.h"
46#include "routing.h" 48#include "routing.h"
47#include "send.h" 49#include "send.h"
48#include "translation-table.h" 50#include "translation-table.h"
51#include "tvlv.h"
49 52
50/** 53/**
51 * batadv_v_ogm_orig_get - retrieve and possibly create an originator node 54 * batadv_v_ogm_orig_get - retrieve and possibly create an originator node
@@ -751,7 +754,7 @@ int batadv_v_ogm_packet_recv(struct sk_buff *skb,
751 /* did we receive a OGM2 packet on an interface that does not have 754 /* did we receive a OGM2 packet on an interface that does not have
752 * B.A.T.M.A.N. V enabled ? 755 * B.A.T.M.A.N. V enabled ?
753 */ 756 */
754 if (strcmp(bat_priv->bat_algo_ops->name, "BATMAN_V") != 0) 757 if (strcmp(bat_priv->algo_ops->name, "BATMAN_V") != 0)
755 return NET_RX_DROP; 758 return NET_RX_DROP;
756 759
757 if (!batadv_check_management_packet(skb, if_incoming, BATADV_OGM2_HLEN)) 760 if (!batadv_check_management_packet(skb, if_incoming, BATADV_OGM2_HLEN))
diff --git a/net/batman-adv/bat_v_ogm.h b/net/batman-adv/bat_v_ogm.h
index d849c75ada0e..4c4d45caa422 100644
--- a/net/batman-adv/bat_v_ogm.h
+++ b/net/batman-adv/bat_v_ogm.h
@@ -18,10 +18,10 @@
18#ifndef _BATMAN_ADV_BATADV_V_OGM_H_ 18#ifndef _BATMAN_ADV_BATADV_V_OGM_H_
19#define _BATMAN_ADV_BATADV_V_OGM_H_ 19#define _BATMAN_ADV_BATADV_V_OGM_H_
20 20
21#include "main.h"
22
21#include <linux/types.h> 23#include <linux/types.h>
22 24
23struct batadv_hard_iface;
24struct batadv_priv;
25struct sk_buff; 25struct sk_buff;
26 26
27int batadv_v_ogm_init(struct batadv_priv *bat_priv); 27int batadv_v_ogm_init(struct batadv_priv *bat_priv);
diff --git a/net/batman-adv/bitarray.c b/net/batman-adv/bitarray.c
index a0c7913837a5..032271421a20 100644
--- a/net/batman-adv/bitarray.c
+++ b/net/batman-adv/bitarray.c
@@ -20,6 +20,8 @@
20 20
21#include <linux/bitmap.h> 21#include <linux/bitmap.h>
22 22
23#include "log.h"
24
23/* shift the packet array by n places. */ 25/* shift the packet array by n places. */
24static void batadv_bitmap_shift_left(unsigned long *seq_bits, s32 n) 26static void batadv_bitmap_shift_left(unsigned long *seq_bits, s32 n)
25{ 27{
diff --git a/net/batman-adv/bridge_loop_avoidance.c b/net/batman-adv/bridge_loop_avoidance.c
index 748a9ead7ce5..e4f7494fb974 100644
--- a/net/batman-adv/bridge_loop_avoidance.c
+++ b/net/batman-adv/bridge_loop_avoidance.c
@@ -48,6 +48,7 @@
48 48
49#include "hard-interface.h" 49#include "hard-interface.h"
50#include "hash.h" 50#include "hash.h"
51#include "log.h"
51#include "originator.h" 52#include "originator.h"
52#include "packet.h" 53#include "packet.h"
53#include "sysfs.h" 54#include "sysfs.h"
diff --git a/net/batman-adv/debugfs.c b/net/batman-adv/debugfs.c
index f187a8ff2184..1d68b6e63b96 100644
--- a/net/batman-adv/debugfs.c
+++ b/net/batman-adv/debugfs.c
@@ -18,36 +18,26 @@
18#include "debugfs.h" 18#include "debugfs.h"
19#include "main.h" 19#include "main.h"
20 20
21#include <linux/compiler.h>
22#include <linux/debugfs.h> 21#include <linux/debugfs.h>
23#include <linux/device.h> 22#include <linux/device.h>
24#include <linux/errno.h> 23#include <linux/errno.h>
25#include <linux/export.h> 24#include <linux/export.h>
26#include <linux/fcntl.h>
27#include <linux/fs.h> 25#include <linux/fs.h>
28#include <linux/jiffies.h>
29#include <linux/kernel.h>
30#include <linux/module.h>
31#include <linux/netdevice.h> 26#include <linux/netdevice.h>
32#include <linux/poll.h>
33#include <linux/printk.h> 27#include <linux/printk.h>
34#include <linux/sched.h> /* for linux/wait.h */ 28#include <linux/sched.h> /* for linux/wait.h */
35#include <linux/seq_file.h> 29#include <linux/seq_file.h>
36#include <linux/slab.h>
37#include <linux/spinlock.h>
38#include <linux/stat.h> 30#include <linux/stat.h>
39#include <linux/stddef.h> 31#include <linux/stddef.h>
40#include <linux/stringify.h> 32#include <linux/stringify.h>
41#include <linux/sysfs.h> 33#include <linux/sysfs.h>
42#include <linux/types.h>
43#include <linux/uaccess.h>
44#include <linux/wait.h>
45#include <stdarg.h>
46 34
35#include "bat_algo.h"
47#include "bridge_loop_avoidance.h" 36#include "bridge_loop_avoidance.h"
48#include "distributed-arp-table.h" 37#include "distributed-arp-table.h"
49#include "gateway_client.h" 38#include "gateway_client.h"
50#include "icmp_socket.h" 39#include "icmp_socket.h"
40#include "log.h"
51#include "multicast.h" 41#include "multicast.h"
52#include "network-coding.h" 42#include "network-coding.h"
53#include "originator.h" 43#include "originator.h"
@@ -55,209 +45,6 @@
55 45
56static struct dentry *batadv_debugfs; 46static struct dentry *batadv_debugfs;
57 47
58#ifdef CONFIG_BATMAN_ADV_DEBUG
59#define BATADV_LOG_BUFF_MASK (batadv_log_buff_len - 1)
60
61static const int batadv_log_buff_len = BATADV_LOG_BUF_LEN;
62
63static char *batadv_log_char_addr(struct batadv_priv_debug_log *debug_log,
64 size_t idx)
65{
66 return &debug_log->log_buff[idx & BATADV_LOG_BUFF_MASK];
67}
68
69static void batadv_emit_log_char(struct batadv_priv_debug_log *debug_log,
70 char c)
71{
72 char *char_addr;
73
74 char_addr = batadv_log_char_addr(debug_log, debug_log->log_end);
75 *char_addr = c;
76 debug_log->log_end++;
77
78 if (debug_log->log_end - debug_log->log_start > batadv_log_buff_len)
79 debug_log->log_start = debug_log->log_end - batadv_log_buff_len;
80}
81
82__printf(2, 3)
83static int batadv_fdebug_log(struct batadv_priv_debug_log *debug_log,
84 const char *fmt, ...)
85{
86 va_list args;
87 static char debug_log_buf[256];
88 char *p;
89
90 if (!debug_log)
91 return 0;
92
93 spin_lock_bh(&debug_log->lock);
94 va_start(args, fmt);
95 vscnprintf(debug_log_buf, sizeof(debug_log_buf), fmt, args);
96 va_end(args);
97
98 for (p = debug_log_buf; *p != 0; p++)
99 batadv_emit_log_char(debug_log, *p);
100
101 spin_unlock_bh(&debug_log->lock);
102
103 wake_up(&debug_log->queue_wait);
104
105 return 0;
106}
107
108int batadv_debug_log(struct batadv_priv *bat_priv, const char *fmt, ...)
109{
110 va_list args;
111 char tmp_log_buf[256];
112
113 va_start(args, fmt);
114 vscnprintf(tmp_log_buf, sizeof(tmp_log_buf), fmt, args);
115 batadv_fdebug_log(bat_priv->debug_log, "[%10u] %s",
116 jiffies_to_msecs(jiffies), tmp_log_buf);
117 va_end(args);
118
119 return 0;
120}
121
122static int batadv_log_open(struct inode *inode, struct file *file)
123{
124 if (!try_module_get(THIS_MODULE))
125 return -EBUSY;
126
127 nonseekable_open(inode, file);
128 file->private_data = inode->i_private;
129 return 0;
130}
131
132static int batadv_log_release(struct inode *inode, struct file *file)
133{
134 module_put(THIS_MODULE);
135 return 0;
136}
137
138static bool batadv_log_empty(struct batadv_priv_debug_log *debug_log)
139{
140 return !(debug_log->log_start - debug_log->log_end);
141}
142
143static ssize_t batadv_log_read(struct file *file, char __user *buf,
144 size_t count, loff_t *ppos)
145{
146 struct batadv_priv *bat_priv = file->private_data;
147 struct batadv_priv_debug_log *debug_log = bat_priv->debug_log;
148 int error, i = 0;
149 char *char_addr;
150 char c;
151
152 if ((file->f_flags & O_NONBLOCK) && batadv_log_empty(debug_log))
153 return -EAGAIN;
154
155 if (!buf)
156 return -EINVAL;
157
158 if (count == 0)
159 return 0;
160
161 if (!access_ok(VERIFY_WRITE, buf, count))
162 return -EFAULT;
163
164 error = wait_event_interruptible(debug_log->queue_wait,
165 (!batadv_log_empty(debug_log)));
166
167 if (error)
168 return error;
169
170 spin_lock_bh(&debug_log->lock);
171
172 while ((!error) && (i < count) &&
173 (debug_log->log_start != debug_log->log_end)) {
174 char_addr = batadv_log_char_addr(debug_log,
175 debug_log->log_start);
176 c = *char_addr;
177
178 debug_log->log_start++;
179
180 spin_unlock_bh(&debug_log->lock);
181
182 error = __put_user(c, buf);
183
184 spin_lock_bh(&debug_log->lock);
185
186 buf++;
187 i++;
188 }
189
190 spin_unlock_bh(&debug_log->lock);
191
192 if (!error)
193 return i;
194
195 return error;
196}
197
198static unsigned int batadv_log_poll(struct file *file, poll_table *wait)
199{
200 struct batadv_priv *bat_priv = file->private_data;
201 struct batadv_priv_debug_log *debug_log = bat_priv->debug_log;
202
203 poll_wait(file, &debug_log->queue_wait, wait);
204
205 if (!batadv_log_empty(debug_log))
206 return POLLIN | POLLRDNORM;
207
208 return 0;
209}
210
211static const struct file_operations batadv_log_fops = {
212 .open = batadv_log_open,
213 .release = batadv_log_release,
214 .read = batadv_log_read,
215 .poll = batadv_log_poll,
216 .llseek = no_llseek,
217};
218
219static int batadv_debug_log_setup(struct batadv_priv *bat_priv)
220{
221 struct dentry *d;
222
223 if (!bat_priv->debug_dir)
224 goto err;
225
226 bat_priv->debug_log = kzalloc(sizeof(*bat_priv->debug_log), GFP_ATOMIC);
227 if (!bat_priv->debug_log)
228 goto err;
229
230 spin_lock_init(&bat_priv->debug_log->lock);
231 init_waitqueue_head(&bat_priv->debug_log->queue_wait);
232
233 d = debugfs_create_file("log", S_IFREG | S_IRUSR,
234 bat_priv->debug_dir, bat_priv,
235 &batadv_log_fops);
236 if (!d)
237 goto err;
238
239 return 0;
240
241err:
242 return -ENOMEM;
243}
244
245static void batadv_debug_log_cleanup(struct batadv_priv *bat_priv)
246{
247 kfree(bat_priv->debug_log);
248 bat_priv->debug_log = NULL;
249}
250#else /* CONFIG_BATMAN_ADV_DEBUG */
251static int batadv_debug_log_setup(struct batadv_priv *bat_priv)
252{
253 return 0;
254}
255
256static void batadv_debug_log_cleanup(struct batadv_priv *bat_priv)
257{
258}
259#endif
260
261static int batadv_algorithms_open(struct inode *inode, struct file *file) 48static int batadv_algorithms_open(struct inode *inode, struct file *file)
262{ 49{
263 return single_open(file, batadv_algo_seq_print_text, NULL); 50 return single_open(file, batadv_algo_seq_print_text, NULL);
diff --git a/net/batman-adv/distributed-arp-table.c b/net/batman-adv/distributed-arp-table.c
index 278800a99c69..fa7646532a13 100644
--- a/net/batman-adv/distributed-arp-table.c
+++ b/net/batman-adv/distributed-arp-table.c
@@ -45,9 +45,11 @@
45 45
46#include "hard-interface.h" 46#include "hard-interface.h"
47#include "hash.h" 47#include "hash.h"
48#include "log.h"
48#include "originator.h" 49#include "originator.h"
49#include "send.h" 50#include "send.h"
50#include "translation-table.h" 51#include "translation-table.h"
52#include "tvlv.h"
51 53
52static void batadv_dat_purge(struct work_struct *work); 54static void batadv_dat_purge(struct work_struct *work);
53 55
diff --git a/net/batman-adv/fragmentation.c b/net/batman-adv/fragmentation.c
index 9f41a0a0d6ab..0934730fb7ff 100644
--- a/net/batman-adv/fragmentation.c
+++ b/net/batman-adv/fragmentation.c
@@ -433,11 +433,12 @@ err:
433 * @orig_node: final destination of the created fragments 433 * @orig_node: final destination of the created fragments
434 * @neigh_node: next-hop of the created fragments 434 * @neigh_node: next-hop of the created fragments
435 * 435 *
436 * Return: true on success, false otherwise. 436 * Return: the netdev tx status or -1 in case of error.
437 * When -1 is returned the skb is not consumed.
437 */ 438 */
438bool batadv_frag_send_packet(struct sk_buff *skb, 439int batadv_frag_send_packet(struct sk_buff *skb,
439 struct batadv_orig_node *orig_node, 440 struct batadv_orig_node *orig_node,
440 struct batadv_neigh_node *neigh_node) 441 struct batadv_neigh_node *neigh_node)
441{ 442{
442 struct batadv_priv *bat_priv; 443 struct batadv_priv *bat_priv;
443 struct batadv_hard_iface *primary_if = NULL; 444 struct batadv_hard_iface *primary_if = NULL;
@@ -446,7 +447,7 @@ bool batadv_frag_send_packet(struct sk_buff *skb,
446 unsigned int mtu = neigh_node->if_incoming->net_dev->mtu; 447 unsigned int mtu = neigh_node->if_incoming->net_dev->mtu;
447 unsigned int header_size = sizeof(frag_header); 448 unsigned int header_size = sizeof(frag_header);
448 unsigned int max_fragment_size, max_packet_size; 449 unsigned int max_fragment_size, max_packet_size;
449 bool ret = false; 450 int ret = -1;
450 451
451 /* To avoid merge and refragmentation at next-hops we never send 452 /* To avoid merge and refragmentation at next-hops we never send
452 * fragments larger than BATADV_FRAG_MAX_FRAG_SIZE 453 * fragments larger than BATADV_FRAG_MAX_FRAG_SIZE
@@ -457,12 +458,12 @@ bool batadv_frag_send_packet(struct sk_buff *skb,
457 458
458 /* Don't even try to fragment, if we need more than 16 fragments */ 459 /* Don't even try to fragment, if we need more than 16 fragments */
459 if (skb->len > max_packet_size) 460 if (skb->len > max_packet_size)
460 goto out_err; 461 goto out;
461 462
462 bat_priv = orig_node->bat_priv; 463 bat_priv = orig_node->bat_priv;
463 primary_if = batadv_primary_if_get_selected(bat_priv); 464 primary_if = batadv_primary_if_get_selected(bat_priv);
464 if (!primary_if) 465 if (!primary_if)
465 goto out_err; 466 goto out;
466 467
467 /* Create one header to be copied to all fragments */ 468 /* Create one header to be copied to all fragments */
468 frag_header.packet_type = BATADV_UNICAST_FRAG; 469 frag_header.packet_type = BATADV_UNICAST_FRAG;
@@ -488,23 +489,33 @@ bool batadv_frag_send_packet(struct sk_buff *skb,
488 while (skb->len > max_fragment_size) { 489 while (skb->len > max_fragment_size) {
489 skb_fragment = batadv_frag_create(skb, &frag_header, mtu); 490 skb_fragment = batadv_frag_create(skb, &frag_header, mtu);
490 if (!skb_fragment) 491 if (!skb_fragment)
491 goto out_err; 492 goto out;
492 493
493 batadv_inc_counter(bat_priv, BATADV_CNT_FRAG_TX); 494 batadv_inc_counter(bat_priv, BATADV_CNT_FRAG_TX);
494 batadv_add_counter(bat_priv, BATADV_CNT_FRAG_TX_BYTES, 495 batadv_add_counter(bat_priv, BATADV_CNT_FRAG_TX_BYTES,
495 skb_fragment->len + ETH_HLEN); 496 skb_fragment->len + ETH_HLEN);
496 batadv_send_unicast_skb(skb_fragment, neigh_node); 497 ret = batadv_send_unicast_skb(skb_fragment, neigh_node);
498 if (ret != NET_XMIT_SUCCESS) {
499 /* return -1 so that the caller can free the original
500 * skb
501 */
502 ret = -1;
503 goto out;
504 }
505
497 frag_header.no++; 506 frag_header.no++;
498 507
499 /* The initial check in this function should cover this case */ 508 /* The initial check in this function should cover this case */
500 if (frag_header.no == BATADV_FRAG_MAX_FRAGMENTS - 1) 509 if (frag_header.no == BATADV_FRAG_MAX_FRAGMENTS - 1) {
501 goto out_err; 510 ret = -1;
511 goto out;
512 }
502 } 513 }
503 514
504 /* Make room for the fragment header. */ 515 /* Make room for the fragment header. */
505 if (batadv_skb_head_push(skb, header_size) < 0 || 516 if (batadv_skb_head_push(skb, header_size) < 0 ||
506 pskb_expand_head(skb, header_size + ETH_HLEN, 0, GFP_ATOMIC) < 0) 517 pskb_expand_head(skb, header_size + ETH_HLEN, 0, GFP_ATOMIC) < 0)
507 goto out_err; 518 goto out;
508 519
509 memcpy(skb->data, &frag_header, header_size); 520 memcpy(skb->data, &frag_header, header_size);
510 521
@@ -512,11 +523,9 @@ bool batadv_frag_send_packet(struct sk_buff *skb,
512 batadv_inc_counter(bat_priv, BATADV_CNT_FRAG_TX); 523 batadv_inc_counter(bat_priv, BATADV_CNT_FRAG_TX);
513 batadv_add_counter(bat_priv, BATADV_CNT_FRAG_TX_BYTES, 524 batadv_add_counter(bat_priv, BATADV_CNT_FRAG_TX_BYTES,
514 skb->len + ETH_HLEN); 525 skb->len + ETH_HLEN);
515 batadv_send_unicast_skb(skb, neigh_node); 526 ret = batadv_send_unicast_skb(skb, neigh_node);
516 527
517 ret = true; 528out:
518
519out_err:
520 if (primary_if) 529 if (primary_if)
521 batadv_hardif_put(primary_if); 530 batadv_hardif_put(primary_if);
522 531
diff --git a/net/batman-adv/fragmentation.h b/net/batman-adv/fragmentation.h
index 9ff77c7ef7c7..3202fe329e63 100644
--- a/net/batman-adv/fragmentation.h
+++ b/net/batman-adv/fragmentation.h
@@ -34,9 +34,9 @@ bool batadv_frag_skb_fwd(struct sk_buff *skb,
34 struct batadv_orig_node *orig_node_src); 34 struct batadv_orig_node *orig_node_src);
35bool batadv_frag_skb_buffer(struct sk_buff **skb, 35bool batadv_frag_skb_buffer(struct sk_buff **skb,
36 struct batadv_orig_node *orig_node); 36 struct batadv_orig_node *orig_node);
37bool batadv_frag_send_packet(struct sk_buff *skb, 37int batadv_frag_send_packet(struct sk_buff *skb,
38 struct batadv_orig_node *orig_node, 38 struct batadv_orig_node *orig_node,
39 struct batadv_neigh_node *neigh_node); 39 struct batadv_neigh_node *neigh_node);
40 40
41/** 41/**
42 * batadv_frag_check_entry - check if a list of fragments has timed out 42 * batadv_frag_check_entry - check if a list of fragments has timed out
diff --git a/net/batman-adv/gateway_client.c b/net/batman-adv/gateway_client.c
index 18c3715e5e27..63a805d3f96e 100644
--- a/net/batman-adv/gateway_client.c
+++ b/net/batman-adv/gateway_client.c
@@ -42,6 +42,7 @@
42 42
43#include "gateway_common.h" 43#include "gateway_common.h"
44#include "hard-interface.h" 44#include "hard-interface.h"
45#include "log.h"
45#include "originator.h" 46#include "originator.h"
46#include "packet.h" 47#include "packet.h"
47#include "routing.h" 48#include "routing.h"
diff --git a/net/batman-adv/gateway_common.c b/net/batman-adv/gateway_common.c
index 3c269457776e..d7bc6a87bcc9 100644
--- a/net/batman-adv/gateway_common.c
+++ b/net/batman-adv/gateway_common.c
@@ -19,8 +19,8 @@
19#include "main.h" 19#include "main.h"
20 20
21#include <linux/atomic.h> 21#include <linux/atomic.h>
22#include <linux/errno.h>
23#include <linux/byteorder/generic.h> 22#include <linux/byteorder/generic.h>
23#include <linux/errno.h>
24#include <linux/kernel.h> 24#include <linux/kernel.h>
25#include <linux/math64.h> 25#include <linux/math64.h>
26#include <linux/netdevice.h> 26#include <linux/netdevice.h>
@@ -28,7 +28,9 @@
28#include <linux/string.h> 28#include <linux/string.h>
29 29
30#include "gateway_client.h" 30#include "gateway_client.h"
31#include "log.h"
31#include "packet.h" 32#include "packet.h"
33#include "tvlv.h"
32 34
33/** 35/**
34 * batadv_parse_throughput - parse supplied string buffer to extract throughput 36 * batadv_parse_throughput - parse supplied string buffer to extract throughput
diff --git a/net/batman-adv/hard-interface.c b/net/batman-adv/hard-interface.c
index 3696929e5692..1f9080840566 100644
--- a/net/batman-adv/hard-interface.c
+++ b/net/batman-adv/hard-interface.c
@@ -23,9 +23,9 @@
23#include <linux/byteorder/generic.h> 23#include <linux/byteorder/generic.h>
24#include <linux/errno.h> 24#include <linux/errno.h>
25#include <linux/fs.h> 25#include <linux/fs.h>
26#include <linux/if.h>
26#include <linux/if_arp.h> 27#include <linux/if_arp.h>
27#include <linux/if_ether.h> 28#include <linux/if_ether.h>
28#include <linux/if.h>
29#include <linux/kernel.h> 29#include <linux/kernel.h>
30#include <linux/kref.h> 30#include <linux/kref.h>
31#include <linux/list.h> 31#include <linux/list.h>
@@ -37,11 +37,12 @@
37#include <linux/spinlock.h> 37#include <linux/spinlock.h>
38#include <linux/workqueue.h> 38#include <linux/workqueue.h>
39 39
40#include "bat_algo.h" 40#include "bat_v.h"
41#include "bridge_loop_avoidance.h" 41#include "bridge_loop_avoidance.h"
42#include "debugfs.h" 42#include "debugfs.h"
43#include "distributed-arp-table.h" 43#include "distributed-arp-table.h"
44#include "gateway_client.h" 44#include "gateway_client.h"
45#include "log.h"
45#include "originator.h" 46#include "originator.h"
46#include "packet.h" 47#include "packet.h"
47#include "send.h" 48#include "send.h"
@@ -246,7 +247,7 @@ static void batadv_primary_if_select(struct batadv_priv *bat_priv,
246 if (!new_hard_iface) 247 if (!new_hard_iface)
247 goto out; 248 goto out;
248 249
249 bat_priv->bat_algo_ops->bat_primary_iface_set(new_hard_iface); 250 bat_priv->algo_ops->iface.primary_set(new_hard_iface);
250 batadv_primary_if_update_addr(bat_priv, curr_hard_iface); 251 batadv_primary_if_update_addr(bat_priv, curr_hard_iface);
251 252
252out: 253out:
@@ -393,7 +394,7 @@ batadv_hardif_activate_interface(struct batadv_hard_iface *hard_iface)
393 394
394 bat_priv = netdev_priv(hard_iface->soft_iface); 395 bat_priv = netdev_priv(hard_iface->soft_iface);
395 396
396 bat_priv->bat_algo_ops->bat_iface_update_mac(hard_iface); 397 bat_priv->algo_ops->iface.update_mac(hard_iface);
397 hard_iface->if_status = BATADV_IF_TO_BE_ACTIVATED; 398 hard_iface->if_status = BATADV_IF_TO_BE_ACTIVATED;
398 399
399 /* the first active interface becomes our primary interface or 400 /* the first active interface becomes our primary interface or
@@ -408,8 +409,8 @@ batadv_hardif_activate_interface(struct batadv_hard_iface *hard_iface)
408 409
409 batadv_update_min_mtu(hard_iface->soft_iface); 410 batadv_update_min_mtu(hard_iface->soft_iface);
410 411
411 if (bat_priv->bat_algo_ops->bat_iface_activate) 412 if (bat_priv->algo_ops->iface.activate)
412 bat_priv->bat_algo_ops->bat_iface_activate(hard_iface); 413 bat_priv->algo_ops->iface.activate(hard_iface);
413 414
414out: 415out:
415 if (primary_if) 416 if (primary_if)
@@ -507,7 +508,7 @@ int batadv_hardif_enable_interface(struct batadv_hard_iface *hard_iface,
507 if (ret) 508 if (ret)
508 goto err_dev; 509 goto err_dev;
509 510
510 ret = bat_priv->bat_algo_ops->bat_iface_enable(hard_iface); 511 ret = bat_priv->algo_ops->iface.enable(hard_iface);
511 if (ret < 0) 512 if (ret < 0)
512 goto err_upper; 513 goto err_upper;
513 514
@@ -516,7 +517,7 @@ int batadv_hardif_enable_interface(struct batadv_hard_iface *hard_iface,
516 hard_iface->if_status = BATADV_IF_INACTIVE; 517 hard_iface->if_status = BATADV_IF_INACTIVE;
517 ret = batadv_orig_hash_add_if(hard_iface, bat_priv->num_ifaces); 518 ret = batadv_orig_hash_add_if(hard_iface, bat_priv->num_ifaces);
518 if (ret < 0) { 519 if (ret < 0) {
519 bat_priv->bat_algo_ops->bat_iface_disable(hard_iface); 520 bat_priv->algo_ops->iface.disable(hard_iface);
520 bat_priv->num_ifaces--; 521 bat_priv->num_ifaces--;
521 hard_iface->if_status = BATADV_IF_NOT_IN_USE; 522 hard_iface->if_status = BATADV_IF_NOT_IN_USE;
522 goto err_upper; 523 goto err_upper;
@@ -597,7 +598,7 @@ void batadv_hardif_disable_interface(struct batadv_hard_iface *hard_iface,
597 batadv_hardif_put(new_if); 598 batadv_hardif_put(new_if);
598 } 599 }
599 600
600 bat_priv->bat_algo_ops->bat_iface_disable(hard_iface); 601 bat_priv->algo_ops->iface.disable(hard_iface);
601 hard_iface->if_status = BATADV_IF_NOT_IN_USE; 602 hard_iface->if_status = BATADV_IF_NOT_IN_USE;
602 603
603 /* delete all references to this hard_iface */ 604 /* delete all references to this hard_iface */
@@ -782,7 +783,7 @@ static int batadv_hard_if_event(struct notifier_block *this,
782 batadv_check_known_mac_addr(hard_iface->net_dev); 783 batadv_check_known_mac_addr(hard_iface->net_dev);
783 784
784 bat_priv = netdev_priv(hard_iface->soft_iface); 785 bat_priv = netdev_priv(hard_iface->soft_iface);
785 bat_priv->bat_algo_ops->bat_iface_update_mac(hard_iface); 786 bat_priv->algo_ops->iface.update_mac(hard_iface);
786 787
787 primary_if = batadv_primary_if_get_selected(bat_priv); 788 primary_if = batadv_primary_if_get_selected(bat_priv);
788 if (!primary_if) 789 if (!primary_if)
diff --git a/net/batman-adv/icmp_socket.c b/net/batman-adv/icmp_socket.c
index 777aea10cd8f..378cc1119d66 100644
--- a/net/batman-adv/icmp_socket.c
+++ b/net/batman-adv/icmp_socket.c
@@ -45,6 +45,7 @@
45#include <linux/wait.h> 45#include <linux/wait.h>
46 46
47#include "hard-interface.h" 47#include "hard-interface.h"
48#include "log.h"
48#include "originator.h" 49#include "originator.h"
49#include "packet.h" 50#include "packet.h"
50#include "send.h" 51#include "send.h"
diff --git a/net/batman-adv/log.c b/net/batman-adv/log.c
new file mode 100644
index 000000000000..56dc532f7a2c
--- /dev/null
+++ b/net/batman-adv/log.c
@@ -0,0 +1,231 @@
1/* Copyright (C) 2010-2016 B.A.T.M.A.N. contributors:
2 *
3 * Marek Lindner
4 *
5 * This program is free software; you can redistribute it and/or
6 * modify it under the terms of version 2 of the GNU General Public
7 * License as published by the Free Software Foundation.
8 *
9 * This program is distributed in the hope that it will be useful, but
10 * WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * General Public License for more details.
13 *
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, see <http://www.gnu.org/licenses/>.
16 */
17
18#include "log.h"
19#include "main.h"
20
21#include <linux/compiler.h>
22#include <linux/debugfs.h>
23#include <linux/errno.h>
24#include <linux/export.h>
25#include <linux/fcntl.h>
26#include <linux/fs.h>
27#include <linux/jiffies.h>
28#include <linux/kernel.h>
29#include <linux/module.h>
30#include <linux/poll.h>
31#include <linux/sched.h> /* for linux/wait.h */
32#include <linux/slab.h>
33#include <linux/spinlock.h>
34#include <linux/stat.h>
35#include <linux/stddef.h>
36#include <linux/types.h>
37#include <linux/uaccess.h>
38#include <linux/wait.h>
39#include <stdarg.h>
40
41#define BATADV_LOG_BUFF_MASK (batadv_log_buff_len - 1)
42
43static const int batadv_log_buff_len = BATADV_LOG_BUF_LEN;
44
45static char *batadv_log_char_addr(struct batadv_priv_debug_log *debug_log,
46 size_t idx)
47{
48 return &debug_log->log_buff[idx & BATADV_LOG_BUFF_MASK];
49}
50
51static void batadv_emit_log_char(struct batadv_priv_debug_log *debug_log,
52 char c)
53{
54 char *char_addr;
55
56 char_addr = batadv_log_char_addr(debug_log, debug_log->log_end);
57 *char_addr = c;
58 debug_log->log_end++;
59
60 if (debug_log->log_end - debug_log->log_start > batadv_log_buff_len)
61 debug_log->log_start = debug_log->log_end - batadv_log_buff_len;
62}
63
64__printf(2, 3)
65static int batadv_fdebug_log(struct batadv_priv_debug_log *debug_log,
66 const char *fmt, ...)
67{
68 va_list args;
69 static char debug_log_buf[256];
70 char *p;
71
72 if (!debug_log)
73 return 0;
74
75 spin_lock_bh(&debug_log->lock);
76 va_start(args, fmt);
77 vscnprintf(debug_log_buf, sizeof(debug_log_buf), fmt, args);
78 va_end(args);
79
80 for (p = debug_log_buf; *p != 0; p++)
81 batadv_emit_log_char(debug_log, *p);
82
83 spin_unlock_bh(&debug_log->lock);
84
85 wake_up(&debug_log->queue_wait);
86
87 return 0;
88}
89
90int batadv_debug_log(struct batadv_priv *bat_priv, const char *fmt, ...)
91{
92 va_list args;
93 char tmp_log_buf[256];
94
95 va_start(args, fmt);
96 vscnprintf(tmp_log_buf, sizeof(tmp_log_buf), fmt, args);
97 batadv_fdebug_log(bat_priv->debug_log, "[%10u] %s",
98 jiffies_to_msecs(jiffies), tmp_log_buf);
99 va_end(args);
100
101 return 0;
102}
103
104static int batadv_log_open(struct inode *inode, struct file *file)
105{
106 if (!try_module_get(THIS_MODULE))
107 return -EBUSY;
108
109 nonseekable_open(inode, file);
110 file->private_data = inode->i_private;
111 return 0;
112}
113
114static int batadv_log_release(struct inode *inode, struct file *file)
115{
116 module_put(THIS_MODULE);
117 return 0;
118}
119
120static bool batadv_log_empty(struct batadv_priv_debug_log *debug_log)
121{
122 return !(debug_log->log_start - debug_log->log_end);
123}
124
125static ssize_t batadv_log_read(struct file *file, char __user *buf,
126 size_t count, loff_t *ppos)
127{
128 struct batadv_priv *bat_priv = file->private_data;
129 struct batadv_priv_debug_log *debug_log = bat_priv->debug_log;
130 int error, i = 0;
131 char *char_addr;
132 char c;
133
134 if ((file->f_flags & O_NONBLOCK) && batadv_log_empty(debug_log))
135 return -EAGAIN;
136
137 if (!buf)
138 return -EINVAL;
139
140 if (count == 0)
141 return 0;
142
143 if (!access_ok(VERIFY_WRITE, buf, count))
144 return -EFAULT;
145
146 error = wait_event_interruptible(debug_log->queue_wait,
147 (!batadv_log_empty(debug_log)));
148
149 if (error)
150 return error;
151
152 spin_lock_bh(&debug_log->lock);
153
154 while ((!error) && (i < count) &&
155 (debug_log->log_start != debug_log->log_end)) {
156 char_addr = batadv_log_char_addr(debug_log,
157 debug_log->log_start);
158 c = *char_addr;
159
160 debug_log->log_start++;
161
162 spin_unlock_bh(&debug_log->lock);
163
164 error = __put_user(c, buf);
165
166 spin_lock_bh(&debug_log->lock);
167
168 buf++;
169 i++;
170 }
171
172 spin_unlock_bh(&debug_log->lock);
173
174 if (!error)
175 return i;
176
177 return error;
178}
179
180static unsigned int batadv_log_poll(struct file *file, poll_table *wait)
181{
182 struct batadv_priv *bat_priv = file->private_data;
183 struct batadv_priv_debug_log *debug_log = bat_priv->debug_log;
184
185 poll_wait(file, &debug_log->queue_wait, wait);
186
187 if (!batadv_log_empty(debug_log))
188 return POLLIN | POLLRDNORM;
189
190 return 0;
191}
192
193static const struct file_operations batadv_log_fops = {
194 .open = batadv_log_open,
195 .release = batadv_log_release,
196 .read = batadv_log_read,
197 .poll = batadv_log_poll,
198 .llseek = no_llseek,
199};
200
201int batadv_debug_log_setup(struct batadv_priv *bat_priv)
202{
203 struct dentry *d;
204
205 if (!bat_priv->debug_dir)
206 goto err;
207
208 bat_priv->debug_log = kzalloc(sizeof(*bat_priv->debug_log), GFP_ATOMIC);
209 if (!bat_priv->debug_log)
210 goto err;
211
212 spin_lock_init(&bat_priv->debug_log->lock);
213 init_waitqueue_head(&bat_priv->debug_log->queue_wait);
214
215 d = debugfs_create_file("log", S_IFREG | S_IRUSR,
216 bat_priv->debug_dir, bat_priv,
217 &batadv_log_fops);
218 if (!d)
219 goto err;
220
221 return 0;
222
223err:
224 return -ENOMEM;
225}
226
227void batadv_debug_log_cleanup(struct batadv_priv *bat_priv)
228{
229 kfree(bat_priv->debug_log);
230 bat_priv->debug_log = NULL;
231}
diff --git a/net/batman-adv/log.h b/net/batman-adv/log.h
new file mode 100644
index 000000000000..e0e1a88c3e58
--- /dev/null
+++ b/net/batman-adv/log.h
@@ -0,0 +1,111 @@
1/* Copyright (C) 2007-2016 B.A.T.M.A.N. contributors:
2 *
3 * Marek Lindner, Simon Wunderlich
4 *
5 * This program is free software; you can redistribute it and/or
6 * modify it under the terms of version 2 of the GNU General Public
7 * License as published by the Free Software Foundation.
8 *
9 * This program is distributed in the hope that it will be useful, but
10 * WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * General Public License for more details.
13 *
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, see <http://www.gnu.org/licenses/>.
16 */
17
18#ifndef _NET_BATMAN_ADV_LOG_H_
19#define _NET_BATMAN_ADV_LOG_H_
20
21#include "main.h"
22
23#include <linux/bitops.h>
24#include <linux/compiler.h>
25#include <linux/printk.h>
26
27#ifdef CONFIG_BATMAN_ADV_DEBUG
28
29int batadv_debug_log_setup(struct batadv_priv *bat_priv);
30void batadv_debug_log_cleanup(struct batadv_priv *bat_priv);
31
32#else
33
34static inline int batadv_debug_log_setup(struct batadv_priv *bat_priv)
35{
36 return 0;
37}
38
39static inline void batadv_debug_log_cleanup(struct batadv_priv *bat_priv)
40{
41}
42
43#endif
44
45/**
46 * enum batadv_dbg_level - available log levels
47 * @BATADV_DBG_BATMAN: OGM and TQ computations related messages
48 * @BATADV_DBG_ROUTES: route added / changed / deleted
49 * @BATADV_DBG_TT: translation table messages
50 * @BATADV_DBG_BLA: bridge loop avoidance messages
51 * @BATADV_DBG_DAT: ARP snooping and DAT related messages
52 * @BATADV_DBG_NC: network coding related messages
53 * @BATADV_DBG_MCAST: multicast related messages
54 * @BATADV_DBG_TP_METER: throughput meter messages
55 * @BATADV_DBG_ALL: the union of all the above log levels
56 */
57enum batadv_dbg_level {
58 BATADV_DBG_BATMAN = BIT(0),
59 BATADV_DBG_ROUTES = BIT(1),
60 BATADV_DBG_TT = BIT(2),
61 BATADV_DBG_BLA = BIT(3),
62 BATADV_DBG_DAT = BIT(4),
63 BATADV_DBG_NC = BIT(5),
64 BATADV_DBG_MCAST = BIT(6),
65 BATADV_DBG_TP_METER = BIT(7),
66 BATADV_DBG_ALL = 127,
67};
68
69#ifdef CONFIG_BATMAN_ADV_DEBUG
70int batadv_debug_log(struct batadv_priv *bat_priv, const char *fmt, ...)
71__printf(2, 3);
72
73/* possibly ratelimited debug output */
74#define _batadv_dbg(type, bat_priv, ratelimited, fmt, arg...) \
75 do { \
76 if (atomic_read(&bat_priv->log_level) & type && \
77 (!ratelimited || net_ratelimit())) \
78 batadv_debug_log(bat_priv, fmt, ## arg);\
79 } \
80 while (0)
81#else /* !CONFIG_BATMAN_ADV_DEBUG */
82__printf(4, 5)
83static inline void _batadv_dbg(int type __always_unused,
84 struct batadv_priv *bat_priv __always_unused,
85 int ratelimited __always_unused,
86 const char *fmt __always_unused, ...)
87{
88}
89#endif
90
91#define batadv_dbg(type, bat_priv, arg...) \
92 _batadv_dbg(type, bat_priv, 0, ## arg)
93#define batadv_dbg_ratelimited(type, bat_priv, arg...) \
94 _batadv_dbg(type, bat_priv, 1, ## arg)
95
96#define batadv_info(net_dev, fmt, arg...) \
97 do { \
98 struct net_device *_netdev = (net_dev); \
99 struct batadv_priv *_batpriv = netdev_priv(_netdev); \
100 batadv_dbg(BATADV_DBG_ALL, _batpriv, fmt, ## arg); \
101 pr_info("%s: " fmt, _netdev->name, ## arg); \
102 } while (0)
103#define batadv_err(net_dev, fmt, arg...) \
104 do { \
105 struct net_device *_netdev = (net_dev); \
106 struct batadv_priv *_batpriv = netdev_priv(_netdev); \
107 batadv_dbg(BATADV_DBG_ALL, _batpriv, fmt, ## arg); \
108 pr_err("%s: " fmt, _netdev->name, ## arg); \
109 } while (0)
110
111#endif /* _NET_BATMAN_ADV_LOG_H_ */
diff --git a/net/batman-adv/main.c b/net/batman-adv/main.c
index 627d14ececaf..fe4c5e29f96b 100644
--- a/net/batman-adv/main.c
+++ b/net/batman-adv/main.c
@@ -31,16 +31,13 @@
31#include <linux/kernel.h> 31#include <linux/kernel.h>
32#include <linux/kref.h> 32#include <linux/kref.h>
33#include <linux/list.h> 33#include <linux/list.h>
34#include <linux/lockdep.h>
35#include <linux/module.h> 34#include <linux/module.h>
36#include <linux/moduleparam.h>
37#include <linux/netdevice.h> 35#include <linux/netdevice.h>
38#include <linux/pkt_sched.h> 36#include <linux/printk.h>
39#include <linux/rculist.h> 37#include <linux/rculist.h>
40#include <linux/rcupdate.h> 38#include <linux/rcupdate.h>
41#include <linux/seq_file.h> 39#include <linux/seq_file.h>
42#include <linux/skbuff.h> 40#include <linux/skbuff.h>
43#include <linux/slab.h>
44#include <linux/spinlock.h> 41#include <linux/spinlock.h>
45#include <linux/stddef.h> 42#include <linux/stddef.h>
46#include <linux/string.h> 43#include <linux/string.h>
@@ -49,6 +46,8 @@
49#include <net/rtnetlink.h> 46#include <net/rtnetlink.h>
50 47
51#include "bat_algo.h" 48#include "bat_algo.h"
49#include "bat_iv_ogm.h"
50#include "bat_v.h"
52#include "bridge_loop_avoidance.h" 51#include "bridge_loop_avoidance.h"
53#include "debugfs.h" 52#include "debugfs.h"
54#include "distributed-arp-table.h" 53#include "distributed-arp-table.h"
@@ -56,13 +55,16 @@
56#include "gateway_common.h" 55#include "gateway_common.h"
57#include "hard-interface.h" 56#include "hard-interface.h"
58#include "icmp_socket.h" 57#include "icmp_socket.h"
58#include "log.h"
59#include "multicast.h" 59#include "multicast.h"
60#include "netlink.h"
60#include "network-coding.h" 61#include "network-coding.h"
61#include "originator.h" 62#include "originator.h"
62#include "packet.h" 63#include "packet.h"
63#include "routing.h" 64#include "routing.h"
64#include "send.h" 65#include "send.h"
65#include "soft-interface.h" 66#include "soft-interface.h"
67#include "tp_meter.h"
66#include "translation-table.h" 68#include "translation-table.h"
67 69
68/* List manipulations on hardif_list have to be rtnl_lock()'ed, 70/* List manipulations on hardif_list have to be rtnl_lock()'ed,
@@ -71,8 +73,6 @@
71struct list_head batadv_hardif_list; 73struct list_head batadv_hardif_list;
72static int (*batadv_rx_handler[256])(struct sk_buff *, 74static int (*batadv_rx_handler[256])(struct sk_buff *,
73 struct batadv_hard_iface *); 75 struct batadv_hard_iface *);
74char batadv_routing_algo[20] = "BATMAN_IV";
75static struct hlist_head batadv_algo_list;
76 76
77unsigned char batadv_broadcast_addr[] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff}; 77unsigned char batadv_broadcast_addr[] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
78 78
@@ -83,13 +83,14 @@ static void batadv_recv_handler_init(void);
83static int __init batadv_init(void) 83static int __init batadv_init(void)
84{ 84{
85 INIT_LIST_HEAD(&batadv_hardif_list); 85 INIT_LIST_HEAD(&batadv_hardif_list);
86 INIT_HLIST_HEAD(&batadv_algo_list); 86 batadv_algo_init();
87 87
88 batadv_recv_handler_init(); 88 batadv_recv_handler_init();
89 89
90 batadv_v_init(); 90 batadv_v_init();
91 batadv_iv_init(); 91 batadv_iv_init();
92 batadv_nc_init(); 92 batadv_nc_init();
93 batadv_tp_meter_init();
93 94
94 batadv_event_workqueue = create_singlethread_workqueue("bat_events"); 95 batadv_event_workqueue = create_singlethread_workqueue("bat_events");
95 96
@@ -101,6 +102,7 @@ static int __init batadv_init(void)
101 102
102 register_netdevice_notifier(&batadv_hard_if_notifier); 103 register_netdevice_notifier(&batadv_hard_if_notifier);
103 rtnl_link_register(&batadv_link_ops); 104 rtnl_link_register(&batadv_link_ops);
105 batadv_netlink_register();
104 106
105 pr_info("B.A.T.M.A.N. advanced %s (compatibility version %i) loaded\n", 107 pr_info("B.A.T.M.A.N. advanced %s (compatibility version %i) loaded\n",
106 BATADV_SOURCE_VERSION, BATADV_COMPAT_VERSION); 108 BATADV_SOURCE_VERSION, BATADV_COMPAT_VERSION);
@@ -111,6 +113,7 @@ static int __init batadv_init(void)
111static void __exit batadv_exit(void) 113static void __exit batadv_exit(void)
112{ 114{
113 batadv_debugfs_destroy(); 115 batadv_debugfs_destroy();
116 batadv_netlink_unregister();
114 rtnl_link_unregister(&batadv_link_ops); 117 rtnl_link_unregister(&batadv_link_ops);
115 unregister_netdevice_notifier(&batadv_hard_if_notifier); 118 unregister_netdevice_notifier(&batadv_hard_if_notifier);
116 batadv_hardif_remove_interfaces(); 119 batadv_hardif_remove_interfaces();
@@ -141,6 +144,7 @@ int batadv_mesh_init(struct net_device *soft_iface)
141 spin_lock_init(&bat_priv->tvlv.container_list_lock); 144 spin_lock_init(&bat_priv->tvlv.container_list_lock);
142 spin_lock_init(&bat_priv->tvlv.handler_list_lock); 145 spin_lock_init(&bat_priv->tvlv.handler_list_lock);
143 spin_lock_init(&bat_priv->softif_vlan_list_lock); 146 spin_lock_init(&bat_priv->softif_vlan_list_lock);
147 spin_lock_init(&bat_priv->tp_list_lock);
144 148
145 INIT_HLIST_HEAD(&bat_priv->forw_bat_list); 149 INIT_HLIST_HEAD(&bat_priv->forw_bat_list);
146 INIT_HLIST_HEAD(&bat_priv->forw_bcast_list); 150 INIT_HLIST_HEAD(&bat_priv->forw_bcast_list);
@@ -159,6 +163,7 @@ int batadv_mesh_init(struct net_device *soft_iface)
159 INIT_HLIST_HEAD(&bat_priv->tvlv.container_list); 163 INIT_HLIST_HEAD(&bat_priv->tvlv.container_list);
160 INIT_HLIST_HEAD(&bat_priv->tvlv.handler_list); 164 INIT_HLIST_HEAD(&bat_priv->tvlv.handler_list);
161 INIT_HLIST_HEAD(&bat_priv->softif_vlan_list); 165 INIT_HLIST_HEAD(&bat_priv->softif_vlan_list);
166 INIT_HLIST_HEAD(&bat_priv->tp_list);
162 167
163 ret = batadv_v_mesh_init(bat_priv); 168 ret = batadv_v_mesh_init(bat_priv);
164 if (ret < 0) 169 if (ret < 0)
@@ -538,76 +543,6 @@ void batadv_recv_handler_unregister(u8 packet_type)
538 batadv_rx_handler[packet_type] = batadv_recv_unhandled_packet; 543 batadv_rx_handler[packet_type] = batadv_recv_unhandled_packet;
539} 544}
540 545
541static struct batadv_algo_ops *batadv_algo_get(char *name)
542{
543 struct batadv_algo_ops *bat_algo_ops = NULL, *bat_algo_ops_tmp;
544
545 hlist_for_each_entry(bat_algo_ops_tmp, &batadv_algo_list, list) {
546 if (strcmp(bat_algo_ops_tmp->name, name) != 0)
547 continue;
548
549 bat_algo_ops = bat_algo_ops_tmp;
550 break;
551 }
552
553 return bat_algo_ops;
554}
555
556int batadv_algo_register(struct batadv_algo_ops *bat_algo_ops)
557{
558 struct batadv_algo_ops *bat_algo_ops_tmp;
559
560 bat_algo_ops_tmp = batadv_algo_get(bat_algo_ops->name);
561 if (bat_algo_ops_tmp) {
562 pr_info("Trying to register already registered routing algorithm: %s\n",
563 bat_algo_ops->name);
564 return -EEXIST;
565 }
566
567 /* all algorithms must implement all ops (for now) */
568 if (!bat_algo_ops->bat_iface_enable ||
569 !bat_algo_ops->bat_iface_disable ||
570 !bat_algo_ops->bat_iface_update_mac ||
571 !bat_algo_ops->bat_primary_iface_set ||
572 !bat_algo_ops->bat_neigh_cmp ||
573 !bat_algo_ops->bat_neigh_is_similar_or_better) {
574 pr_info("Routing algo '%s' does not implement required ops\n",
575 bat_algo_ops->name);
576 return -EINVAL;
577 }
578
579 INIT_HLIST_NODE(&bat_algo_ops->list);
580 hlist_add_head(&bat_algo_ops->list, &batadv_algo_list);
581
582 return 0;
583}
584
585int batadv_algo_select(struct batadv_priv *bat_priv, char *name)
586{
587 struct batadv_algo_ops *bat_algo_ops;
588
589 bat_algo_ops = batadv_algo_get(name);
590 if (!bat_algo_ops)
591 return -EINVAL;
592
593 bat_priv->bat_algo_ops = bat_algo_ops;
594
595 return 0;
596}
597
598int batadv_algo_seq_print_text(struct seq_file *seq, void *offset)
599{
600 struct batadv_algo_ops *bat_algo_ops;
601
602 seq_puts(seq, "Available routing algorithms:\n");
603
604 hlist_for_each_entry(bat_algo_ops, &batadv_algo_list, list) {
605 seq_printf(seq, " * %s\n", bat_algo_ops->name);
606 }
607
608 return 0;
609}
610
611/** 546/**
612 * batadv_skb_crc32 - calculate CRC32 of the whole packet and skip bytes in 547 * batadv_skb_crc32 - calculate CRC32 of the whole packet and skip bytes in
613 * the header 548 * the header
@@ -642,594 +577,6 @@ __be32 batadv_skb_crc32(struct sk_buff *skb, u8 *payload_ptr)
642} 577}
643 578
644/** 579/**
645 * batadv_tvlv_handler_release - release tvlv handler from lists and queue for
646 * free after rcu grace period
647 * @ref: kref pointer of the tvlv
648 */
649static void batadv_tvlv_handler_release(struct kref *ref)
650{
651 struct batadv_tvlv_handler *tvlv_handler;
652
653 tvlv_handler = container_of(ref, struct batadv_tvlv_handler, refcount);
654 kfree_rcu(tvlv_handler, rcu);
655}
656
657/**
658 * batadv_tvlv_handler_put - decrement the tvlv container refcounter and
659 * possibly release it
660 * @tvlv_handler: the tvlv handler to free
661 */
662static void batadv_tvlv_handler_put(struct batadv_tvlv_handler *tvlv_handler)
663{
664 kref_put(&tvlv_handler->refcount, batadv_tvlv_handler_release);
665}
666
667/**
668 * batadv_tvlv_handler_get - retrieve tvlv handler from the tvlv handler list
669 * based on the provided type and version (both need to match)
670 * @bat_priv: the bat priv with all the soft interface information
671 * @type: tvlv handler type to look for
672 * @version: tvlv handler version to look for
673 *
674 * Return: tvlv handler if found or NULL otherwise.
675 */
676static struct batadv_tvlv_handler *
677batadv_tvlv_handler_get(struct batadv_priv *bat_priv, u8 type, u8 version)
678{
679 struct batadv_tvlv_handler *tvlv_handler_tmp, *tvlv_handler = NULL;
680
681 rcu_read_lock();
682 hlist_for_each_entry_rcu(tvlv_handler_tmp,
683 &bat_priv->tvlv.handler_list, list) {
684 if (tvlv_handler_tmp->type != type)
685 continue;
686
687 if (tvlv_handler_tmp->version != version)
688 continue;
689
690 if (!kref_get_unless_zero(&tvlv_handler_tmp->refcount))
691 continue;
692
693 tvlv_handler = tvlv_handler_tmp;
694 break;
695 }
696 rcu_read_unlock();
697
698 return tvlv_handler;
699}
700
701/**
702 * batadv_tvlv_container_release - release tvlv from lists and free
703 * @ref: kref pointer of the tvlv
704 */
705static void batadv_tvlv_container_release(struct kref *ref)
706{
707 struct batadv_tvlv_container *tvlv;
708
709 tvlv = container_of(ref, struct batadv_tvlv_container, refcount);
710 kfree(tvlv);
711}
712
713/**
714 * batadv_tvlv_container_put - decrement the tvlv container refcounter and
715 * possibly release it
716 * @tvlv: the tvlv container to free
717 */
718static void batadv_tvlv_container_put(struct batadv_tvlv_container *tvlv)
719{
720 kref_put(&tvlv->refcount, batadv_tvlv_container_release);
721}
722
723/**
724 * batadv_tvlv_container_get - retrieve tvlv container from the tvlv container
725 * list based on the provided type and version (both need to match)
726 * @bat_priv: the bat priv with all the soft interface information
727 * @type: tvlv container type to look for
728 * @version: tvlv container version to look for
729 *
730 * Has to be called with the appropriate locks being acquired
731 * (tvlv.container_list_lock).
732 *
733 * Return: tvlv container if found or NULL otherwise.
734 */
735static struct batadv_tvlv_container *
736batadv_tvlv_container_get(struct batadv_priv *bat_priv, u8 type, u8 version)
737{
738 struct batadv_tvlv_container *tvlv_tmp, *tvlv = NULL;
739
740 lockdep_assert_held(&bat_priv->tvlv.container_list_lock);
741
742 hlist_for_each_entry(tvlv_tmp, &bat_priv->tvlv.container_list, list) {
743 if (tvlv_tmp->tvlv_hdr.type != type)
744 continue;
745
746 if (tvlv_tmp->tvlv_hdr.version != version)
747 continue;
748
749 kref_get(&tvlv_tmp->refcount);
750 tvlv = tvlv_tmp;
751 break;
752 }
753
754 return tvlv;
755}
756
757/**
758 * batadv_tvlv_container_list_size - calculate the size of the tvlv container
759 * list entries
760 * @bat_priv: the bat priv with all the soft interface information
761 *
762 * Has to be called with the appropriate locks being acquired
763 * (tvlv.container_list_lock).
764 *
765 * Return: size of all currently registered tvlv containers in bytes.
766 */
767static u16 batadv_tvlv_container_list_size(struct batadv_priv *bat_priv)
768{
769 struct batadv_tvlv_container *tvlv;
770 u16 tvlv_len = 0;
771
772 lockdep_assert_held(&bat_priv->tvlv.container_list_lock);
773
774 hlist_for_each_entry(tvlv, &bat_priv->tvlv.container_list, list) {
775 tvlv_len += sizeof(struct batadv_tvlv_hdr);
776 tvlv_len += ntohs(tvlv->tvlv_hdr.len);
777 }
778
779 return tvlv_len;
780}
781
782/**
783 * batadv_tvlv_container_remove - remove tvlv container from the tvlv container
784 * list
785 * @bat_priv: the bat priv with all the soft interface information
786 * @tvlv: the to be removed tvlv container
787 *
788 * Has to be called with the appropriate locks being acquired
789 * (tvlv.container_list_lock).
790 */
791static void batadv_tvlv_container_remove(struct batadv_priv *bat_priv,
792 struct batadv_tvlv_container *tvlv)
793{
794 lockdep_assert_held(&bat_priv->tvlv.container_list_lock);
795
796 if (!tvlv)
797 return;
798
799 hlist_del(&tvlv->list);
800
801 /* first call to decrement the counter, second call to free */
802 batadv_tvlv_container_put(tvlv);
803 batadv_tvlv_container_put(tvlv);
804}
805
806/**
807 * batadv_tvlv_container_unregister - unregister tvlv container based on the
808 * provided type and version (both need to match)
809 * @bat_priv: the bat priv with all the soft interface information
810 * @type: tvlv container type to unregister
811 * @version: tvlv container type to unregister
812 */
813void batadv_tvlv_container_unregister(struct batadv_priv *bat_priv,
814 u8 type, u8 version)
815{
816 struct batadv_tvlv_container *tvlv;
817
818 spin_lock_bh(&bat_priv->tvlv.container_list_lock);
819 tvlv = batadv_tvlv_container_get(bat_priv, type, version);
820 batadv_tvlv_container_remove(bat_priv, tvlv);
821 spin_unlock_bh(&bat_priv->tvlv.container_list_lock);
822}
823
824/**
825 * batadv_tvlv_container_register - register tvlv type, version and content
826 * to be propagated with each (primary interface) OGM
827 * @bat_priv: the bat priv with all the soft interface information
828 * @type: tvlv container type
829 * @version: tvlv container version
830 * @tvlv_value: tvlv container content
831 * @tvlv_value_len: tvlv container content length
832 *
833 * If a container of the same type and version was already registered the new
834 * content is going to replace the old one.
835 */
836void batadv_tvlv_container_register(struct batadv_priv *bat_priv,
837 u8 type, u8 version,
838 void *tvlv_value, u16 tvlv_value_len)
839{
840 struct batadv_tvlv_container *tvlv_old, *tvlv_new;
841
842 if (!tvlv_value)
843 tvlv_value_len = 0;
844
845 tvlv_new = kzalloc(sizeof(*tvlv_new) + tvlv_value_len, GFP_ATOMIC);
846 if (!tvlv_new)
847 return;
848
849 tvlv_new->tvlv_hdr.version = version;
850 tvlv_new->tvlv_hdr.type = type;
851 tvlv_new->tvlv_hdr.len = htons(tvlv_value_len);
852
853 memcpy(tvlv_new + 1, tvlv_value, ntohs(tvlv_new->tvlv_hdr.len));
854 INIT_HLIST_NODE(&tvlv_new->list);
855 kref_init(&tvlv_new->refcount);
856
857 spin_lock_bh(&bat_priv->tvlv.container_list_lock);
858 tvlv_old = batadv_tvlv_container_get(bat_priv, type, version);
859 batadv_tvlv_container_remove(bat_priv, tvlv_old);
860 hlist_add_head(&tvlv_new->list, &bat_priv->tvlv.container_list);
861 spin_unlock_bh(&bat_priv->tvlv.container_list_lock);
862}
863
864/**
865 * batadv_tvlv_realloc_packet_buff - reallocate packet buffer to accommodate
866 * requested packet size
867 * @packet_buff: packet buffer
868 * @packet_buff_len: packet buffer size
869 * @min_packet_len: requested packet minimum size
870 * @additional_packet_len: requested additional packet size on top of minimum
871 * size
872 *
873 * Return: true of the packet buffer could be changed to the requested size,
874 * false otherwise.
875 */
876static bool batadv_tvlv_realloc_packet_buff(unsigned char **packet_buff,
877 int *packet_buff_len,
878 int min_packet_len,
879 int additional_packet_len)
880{
881 unsigned char *new_buff;
882
883 new_buff = kmalloc(min_packet_len + additional_packet_len, GFP_ATOMIC);
884
885 /* keep old buffer if kmalloc should fail */
886 if (!new_buff)
887 return false;
888
889 memcpy(new_buff, *packet_buff, min_packet_len);
890 kfree(*packet_buff);
891 *packet_buff = new_buff;
892 *packet_buff_len = min_packet_len + additional_packet_len;
893
894 return true;
895}
896
897/**
898 * batadv_tvlv_container_ogm_append - append tvlv container content to given
899 * OGM packet buffer
900 * @bat_priv: the bat priv with all the soft interface information
901 * @packet_buff: ogm packet buffer
902 * @packet_buff_len: ogm packet buffer size including ogm header and tvlv
903 * content
904 * @packet_min_len: ogm header size to be preserved for the OGM itself
905 *
906 * The ogm packet might be enlarged or shrunk depending on the current size
907 * and the size of the to-be-appended tvlv containers.
908 *
909 * Return: size of all appended tvlv containers in bytes.
910 */
911u16 batadv_tvlv_container_ogm_append(struct batadv_priv *bat_priv,
912 unsigned char **packet_buff,
913 int *packet_buff_len, int packet_min_len)
914{
915 struct batadv_tvlv_container *tvlv;
916 struct batadv_tvlv_hdr *tvlv_hdr;
917 u16 tvlv_value_len;
918 void *tvlv_value;
919 bool ret;
920
921 spin_lock_bh(&bat_priv->tvlv.container_list_lock);
922 tvlv_value_len = batadv_tvlv_container_list_size(bat_priv);
923
924 ret = batadv_tvlv_realloc_packet_buff(packet_buff, packet_buff_len,
925 packet_min_len, tvlv_value_len);
926
927 if (!ret)
928 goto end;
929
930 if (!tvlv_value_len)
931 goto end;
932
933 tvlv_value = (*packet_buff) + packet_min_len;
934
935 hlist_for_each_entry(tvlv, &bat_priv->tvlv.container_list, list) {
936 tvlv_hdr = tvlv_value;
937 tvlv_hdr->type = tvlv->tvlv_hdr.type;
938 tvlv_hdr->version = tvlv->tvlv_hdr.version;
939 tvlv_hdr->len = tvlv->tvlv_hdr.len;
940 tvlv_value = tvlv_hdr + 1;
941 memcpy(tvlv_value, tvlv + 1, ntohs(tvlv->tvlv_hdr.len));
942 tvlv_value = (u8 *)tvlv_value + ntohs(tvlv->tvlv_hdr.len);
943 }
944
945end:
946 spin_unlock_bh(&bat_priv->tvlv.container_list_lock);
947 return tvlv_value_len;
948}
949
950/**
951 * batadv_tvlv_call_handler - parse the given tvlv buffer to call the
952 * appropriate handlers
953 * @bat_priv: the bat priv with all the soft interface information
954 * @tvlv_handler: tvlv callback function handling the tvlv content
955 * @ogm_source: flag indicating whether the tvlv is an ogm or a unicast packet
956 * @orig_node: orig node emitting the ogm packet
957 * @src: source mac address of the unicast packet
958 * @dst: destination mac address of the unicast packet
959 * @tvlv_value: tvlv content
960 * @tvlv_value_len: tvlv content length
961 *
962 * Return: success if handler was not found or the return value of the handler
963 * callback.
964 */
965static int batadv_tvlv_call_handler(struct batadv_priv *bat_priv,
966 struct batadv_tvlv_handler *tvlv_handler,
967 bool ogm_source,
968 struct batadv_orig_node *orig_node,
969 u8 *src, u8 *dst,
970 void *tvlv_value, u16 tvlv_value_len)
971{
972 if (!tvlv_handler)
973 return NET_RX_SUCCESS;
974
975 if (ogm_source) {
976 if (!tvlv_handler->ogm_handler)
977 return NET_RX_SUCCESS;
978
979 if (!orig_node)
980 return NET_RX_SUCCESS;
981
982 tvlv_handler->ogm_handler(bat_priv, orig_node,
983 BATADV_NO_FLAGS,
984 tvlv_value, tvlv_value_len);
985 tvlv_handler->flags |= BATADV_TVLV_HANDLER_OGM_CALLED;
986 } else {
987 if (!src)
988 return NET_RX_SUCCESS;
989
990 if (!dst)
991 return NET_RX_SUCCESS;
992
993 if (!tvlv_handler->unicast_handler)
994 return NET_RX_SUCCESS;
995
996 return tvlv_handler->unicast_handler(bat_priv, src,
997 dst, tvlv_value,
998 tvlv_value_len);
999 }
1000
1001 return NET_RX_SUCCESS;
1002}
1003
1004/**
1005 * batadv_tvlv_containers_process - parse the given tvlv buffer to call the
1006 * appropriate handlers
1007 * @bat_priv: the bat priv with all the soft interface information
1008 * @ogm_source: flag indicating whether the tvlv is an ogm or a unicast packet
1009 * @orig_node: orig node emitting the ogm packet
1010 * @src: source mac address of the unicast packet
1011 * @dst: destination mac address of the unicast packet
1012 * @tvlv_value: tvlv content
1013 * @tvlv_value_len: tvlv content length
1014 *
1015 * Return: success when processing an OGM or the return value of all called
1016 * handler callbacks.
1017 */
1018int batadv_tvlv_containers_process(struct batadv_priv *bat_priv,
1019 bool ogm_source,
1020 struct batadv_orig_node *orig_node,
1021 u8 *src, u8 *dst,
1022 void *tvlv_value, u16 tvlv_value_len)
1023{
1024 struct batadv_tvlv_handler *tvlv_handler;
1025 struct batadv_tvlv_hdr *tvlv_hdr;
1026 u16 tvlv_value_cont_len;
1027 u8 cifnotfound = BATADV_TVLV_HANDLER_OGM_CIFNOTFND;
1028 int ret = NET_RX_SUCCESS;
1029
1030 while (tvlv_value_len >= sizeof(*tvlv_hdr)) {
1031 tvlv_hdr = tvlv_value;
1032 tvlv_value_cont_len = ntohs(tvlv_hdr->len);
1033 tvlv_value = tvlv_hdr + 1;
1034 tvlv_value_len -= sizeof(*tvlv_hdr);
1035
1036 if (tvlv_value_cont_len > tvlv_value_len)
1037 break;
1038
1039 tvlv_handler = batadv_tvlv_handler_get(bat_priv,
1040 tvlv_hdr->type,
1041 tvlv_hdr->version);
1042
1043 ret |= batadv_tvlv_call_handler(bat_priv, tvlv_handler,
1044 ogm_source, orig_node,
1045 src, dst, tvlv_value,
1046 tvlv_value_cont_len);
1047 if (tvlv_handler)
1048 batadv_tvlv_handler_put(tvlv_handler);
1049 tvlv_value = (u8 *)tvlv_value + tvlv_value_cont_len;
1050 tvlv_value_len -= tvlv_value_cont_len;
1051 }
1052
1053 if (!ogm_source)
1054 return ret;
1055
1056 rcu_read_lock();
1057 hlist_for_each_entry_rcu(tvlv_handler,
1058 &bat_priv->tvlv.handler_list, list) {
1059 if ((tvlv_handler->flags & BATADV_TVLV_HANDLER_OGM_CIFNOTFND) &&
1060 !(tvlv_handler->flags & BATADV_TVLV_HANDLER_OGM_CALLED))
1061 tvlv_handler->ogm_handler(bat_priv, orig_node,
1062 cifnotfound, NULL, 0);
1063
1064 tvlv_handler->flags &= ~BATADV_TVLV_HANDLER_OGM_CALLED;
1065 }
1066 rcu_read_unlock();
1067
1068 return NET_RX_SUCCESS;
1069}
1070
1071/**
1072 * batadv_tvlv_ogm_receive - process an incoming ogm and call the appropriate
1073 * handlers
1074 * @bat_priv: the bat priv with all the soft interface information
1075 * @batadv_ogm_packet: ogm packet containing the tvlv containers
1076 * @orig_node: orig node emitting the ogm packet
1077 */
1078void batadv_tvlv_ogm_receive(struct batadv_priv *bat_priv,
1079 struct batadv_ogm_packet *batadv_ogm_packet,
1080 struct batadv_orig_node *orig_node)
1081{
1082 void *tvlv_value;
1083 u16 tvlv_value_len;
1084
1085 if (!batadv_ogm_packet)
1086 return;
1087
1088 tvlv_value_len = ntohs(batadv_ogm_packet->tvlv_len);
1089 if (!tvlv_value_len)
1090 return;
1091
1092 tvlv_value = batadv_ogm_packet + 1;
1093
1094 batadv_tvlv_containers_process(bat_priv, true, orig_node, NULL, NULL,
1095 tvlv_value, tvlv_value_len);
1096}
1097
1098/**
1099 * batadv_tvlv_handler_register - register tvlv handler based on the provided
1100 * type and version (both need to match) for ogm tvlv payload and/or unicast
1101 * payload
1102 * @bat_priv: the bat priv with all the soft interface information
1103 * @optr: ogm tvlv handler callback function. This function receives the orig
1104 * node, flags and the tvlv content as argument to process.
1105 * @uptr: unicast tvlv handler callback function. This function receives the
1106 * source & destination of the unicast packet as well as the tvlv content
1107 * to process.
1108 * @type: tvlv handler type to be registered
1109 * @version: tvlv handler version to be registered
1110 * @flags: flags to enable or disable TVLV API behavior
1111 */
1112void batadv_tvlv_handler_register(struct batadv_priv *bat_priv,
1113 void (*optr)(struct batadv_priv *bat_priv,
1114 struct batadv_orig_node *orig,
1115 u8 flags,
1116 void *tvlv_value,
1117 u16 tvlv_value_len),
1118 int (*uptr)(struct batadv_priv *bat_priv,
1119 u8 *src, u8 *dst,
1120 void *tvlv_value,
1121 u16 tvlv_value_len),
1122 u8 type, u8 version, u8 flags)
1123{
1124 struct batadv_tvlv_handler *tvlv_handler;
1125
1126 tvlv_handler = batadv_tvlv_handler_get(bat_priv, type, version);
1127 if (tvlv_handler) {
1128 batadv_tvlv_handler_put(tvlv_handler);
1129 return;
1130 }
1131
1132 tvlv_handler = kzalloc(sizeof(*tvlv_handler), GFP_ATOMIC);
1133 if (!tvlv_handler)
1134 return;
1135
1136 tvlv_handler->ogm_handler = optr;
1137 tvlv_handler->unicast_handler = uptr;
1138 tvlv_handler->type = type;
1139 tvlv_handler->version = version;
1140 tvlv_handler->flags = flags;
1141 kref_init(&tvlv_handler->refcount);
1142 INIT_HLIST_NODE(&tvlv_handler->list);
1143
1144 spin_lock_bh(&bat_priv->tvlv.handler_list_lock);
1145 hlist_add_head_rcu(&tvlv_handler->list, &bat_priv->tvlv.handler_list);
1146 spin_unlock_bh(&bat_priv->tvlv.handler_list_lock);
1147}
1148
1149/**
1150 * batadv_tvlv_handler_unregister - unregister tvlv handler based on the
1151 * provided type and version (both need to match)
1152 * @bat_priv: the bat priv with all the soft interface information
1153 * @type: tvlv handler type to be unregistered
1154 * @version: tvlv handler version to be unregistered
1155 */
1156void batadv_tvlv_handler_unregister(struct batadv_priv *bat_priv,
1157 u8 type, u8 version)
1158{
1159 struct batadv_tvlv_handler *tvlv_handler;
1160
1161 tvlv_handler = batadv_tvlv_handler_get(bat_priv, type, version);
1162 if (!tvlv_handler)
1163 return;
1164
1165 batadv_tvlv_handler_put(tvlv_handler);
1166 spin_lock_bh(&bat_priv->tvlv.handler_list_lock);
1167 hlist_del_rcu(&tvlv_handler->list);
1168 spin_unlock_bh(&bat_priv->tvlv.handler_list_lock);
1169 batadv_tvlv_handler_put(tvlv_handler);
1170}
1171
1172/**
1173 * batadv_tvlv_unicast_send - send a unicast packet with tvlv payload to the
1174 * specified host
1175 * @bat_priv: the bat priv with all the soft interface information
1176 * @src: source mac address of the unicast packet
1177 * @dst: destination mac address of the unicast packet
1178 * @type: tvlv type
1179 * @version: tvlv version
1180 * @tvlv_value: tvlv content
1181 * @tvlv_value_len: tvlv content length
1182 */
1183void batadv_tvlv_unicast_send(struct batadv_priv *bat_priv, u8 *src,
1184 u8 *dst, u8 type, u8 version,
1185 void *tvlv_value, u16 tvlv_value_len)
1186{
1187 struct batadv_unicast_tvlv_packet *unicast_tvlv_packet;
1188 struct batadv_tvlv_hdr *tvlv_hdr;
1189 struct batadv_orig_node *orig_node;
1190 struct sk_buff *skb;
1191 unsigned char *tvlv_buff;
1192 unsigned int tvlv_len;
1193 ssize_t hdr_len = sizeof(*unicast_tvlv_packet);
1194
1195 orig_node = batadv_orig_hash_find(bat_priv, dst);
1196 if (!orig_node)
1197 return;
1198
1199 tvlv_len = sizeof(*tvlv_hdr) + tvlv_value_len;
1200
1201 skb = netdev_alloc_skb_ip_align(NULL, ETH_HLEN + hdr_len + tvlv_len);
1202 if (!skb)
1203 goto out;
1204
1205 skb->priority = TC_PRIO_CONTROL;
1206 skb_reserve(skb, ETH_HLEN);
1207 tvlv_buff = skb_put(skb, sizeof(*unicast_tvlv_packet) + tvlv_len);
1208 unicast_tvlv_packet = (struct batadv_unicast_tvlv_packet *)tvlv_buff;
1209 unicast_tvlv_packet->packet_type = BATADV_UNICAST_TVLV;
1210 unicast_tvlv_packet->version = BATADV_COMPAT_VERSION;
1211 unicast_tvlv_packet->ttl = BATADV_TTL;
1212 unicast_tvlv_packet->reserved = 0;
1213 unicast_tvlv_packet->tvlv_len = htons(tvlv_len);
1214 unicast_tvlv_packet->align = 0;
1215 ether_addr_copy(unicast_tvlv_packet->src, src);
1216 ether_addr_copy(unicast_tvlv_packet->dst, dst);
1217
1218 tvlv_buff = (unsigned char *)(unicast_tvlv_packet + 1);
1219 tvlv_hdr = (struct batadv_tvlv_hdr *)tvlv_buff;
1220 tvlv_hdr->version = version;
1221 tvlv_hdr->type = type;
1222 tvlv_hdr->len = htons(tvlv_value_len);
1223 tvlv_buff += sizeof(*tvlv_hdr);
1224 memcpy(tvlv_buff, tvlv_value, tvlv_value_len);
1225
1226 if (batadv_send_skb_to_orig(skb, orig_node, NULL) == NET_XMIT_DROP)
1227 kfree_skb(skb);
1228out:
1229 batadv_orig_node_put(orig_node);
1230}
1231
1232/**
1233 * batadv_get_vid - extract the VLAN identifier from skb if any 580 * batadv_get_vid - extract the VLAN identifier from skb if any
1234 * @skb: the buffer containing the packet 581 * @skb: the buffer containing the packet
1235 * @header_len: length of the batman header preceding the ethernet header 582 * @header_len: length of the batman header preceding the ethernet header
@@ -1282,36 +629,6 @@ bool batadv_vlan_ap_isola_get(struct batadv_priv *bat_priv, unsigned short vid)
1282 return ap_isolation_enabled; 629 return ap_isolation_enabled;
1283} 630}
1284 631
1285static int batadv_param_set_ra(const char *val, const struct kernel_param *kp)
1286{
1287 struct batadv_algo_ops *bat_algo_ops;
1288 char *algo_name = (char *)val;
1289 size_t name_len = strlen(algo_name);
1290
1291 if (name_len > 0 && algo_name[name_len - 1] == '\n')
1292 algo_name[name_len - 1] = '\0';
1293
1294 bat_algo_ops = batadv_algo_get(algo_name);
1295 if (!bat_algo_ops) {
1296 pr_err("Routing algorithm '%s' is not supported\n", algo_name);
1297 return -EINVAL;
1298 }
1299
1300 return param_set_copystring(algo_name, kp);
1301}
1302
1303static const struct kernel_param_ops batadv_param_ops_ra = {
1304 .set = batadv_param_set_ra,
1305 .get = param_get_string,
1306};
1307
1308static struct kparam_string batadv_param_string_ra = {
1309 .maxlen = sizeof(batadv_routing_algo),
1310 .string = batadv_routing_algo,
1311};
1312
1313module_param_cb(routing_algo, &batadv_param_ops_ra, &batadv_param_string_ra,
1314 0644);
1315module_init(batadv_init); 632module_init(batadv_init);
1316module_exit(batadv_exit); 633module_exit(batadv_exit);
1317 634
diff --git a/net/batman-adv/main.h b/net/batman-adv/main.h
index cd83e2824f70..06a860845434 100644
--- a/net/batman-adv/main.h
+++ b/net/batman-adv/main.h
@@ -100,6 +100,9 @@
100#define BATADV_NUM_BCASTS_WIRELESS 3 100#define BATADV_NUM_BCASTS_WIRELESS 3
101#define BATADV_NUM_BCASTS_MAX 3 101#define BATADV_NUM_BCASTS_MAX 3
102 102
103/* length of the single packet used by the TP meter */
104#define BATADV_TP_PACKET_LEN ETH_DATA_LEN
105
103/* msecs after which an ARP_REQUEST is sent in broadcast as fallback */ 106/* msecs after which an ARP_REQUEST is sent in broadcast as fallback */
104#define ARP_REQ_DELAY 250 107#define ARP_REQ_DELAY 250
105/* numbers of originator to contact for any PUT/GET DHT operation */ 108/* numbers of originator to contact for any PUT/GET DHT operation */
@@ -131,6 +134,11 @@
131 134
132#define BATADV_NC_NODE_TIMEOUT 10000 /* Milliseconds */ 135#define BATADV_NC_NODE_TIMEOUT 10000 /* Milliseconds */
133 136
137/**
138 * BATADV_TP_MAX_NUM - maximum number of simultaneously active tp sessions
139 */
140#define BATADV_TP_MAX_NUM 5
141
134enum batadv_mesh_state { 142enum batadv_mesh_state {
135 BATADV_MESH_INACTIVE, 143 BATADV_MESH_INACTIVE,
136 BATADV_MESH_ACTIVE, 144 BATADV_MESH_ACTIVE,
@@ -175,29 +183,26 @@ enum batadv_uev_type {
175 183
176/* Kernel headers */ 184/* Kernel headers */
177 185
178#include <linux/atomic.h>
179#include <linux/bitops.h> /* for packet.h */ 186#include <linux/bitops.h> /* for packet.h */
180#include <linux/compiler.h> 187#include <linux/compiler.h>
181#include <linux/cpumask.h> 188#include <linux/cpumask.h>
182#include <linux/etherdevice.h> 189#include <linux/etherdevice.h>
183#include <linux/if_ether.h> /* for packet.h */ 190#include <linux/if_ether.h> /* for packet.h */
184#include <linux/netdevice.h>
185#include <linux/printk.h>
186#include <linux/types.h>
187#include <linux/percpu.h>
188#include <linux/jiffies.h>
189#include <linux/if_vlan.h> 191#include <linux/if_vlan.h>
192#include <linux/jiffies.h>
193#include <linux/percpu.h>
194#include <linux/types.h>
190 195
191#include "types.h" 196#include "types.h"
192 197
193struct batadv_ogm_packet; 198struct net_device;
199struct packet_type;
194struct seq_file; 200struct seq_file;
195struct sk_buff; 201struct sk_buff;
196 202
197#define BATADV_PRINT_VID(vid) ((vid & BATADV_VLAN_HAS_TAG) ? \ 203#define BATADV_PRINT_VID(vid) ((vid & BATADV_VLAN_HAS_TAG) ? \
198 (int)(vid & VLAN_VID_MASK) : -1) 204 (int)(vid & VLAN_VID_MASK) : -1)
199 205
200extern char batadv_routing_algo[];
201extern struct list_head batadv_hardif_list; 206extern struct list_head batadv_hardif_list;
202 207
203extern unsigned char batadv_broadcast_addr[]; 208extern unsigned char batadv_broadcast_addr[];
@@ -218,76 +223,9 @@ batadv_recv_handler_register(u8 packet_type,
218 int (*recv_handler)(struct sk_buff *, 223 int (*recv_handler)(struct sk_buff *,
219 struct batadv_hard_iface *)); 224 struct batadv_hard_iface *));
220void batadv_recv_handler_unregister(u8 packet_type); 225void batadv_recv_handler_unregister(u8 packet_type);
221int batadv_algo_register(struct batadv_algo_ops *bat_algo_ops);
222int batadv_algo_select(struct batadv_priv *bat_priv, char *name);
223int batadv_algo_seq_print_text(struct seq_file *seq, void *offset);
224__be32 batadv_skb_crc32(struct sk_buff *skb, u8 *payload_ptr); 226__be32 batadv_skb_crc32(struct sk_buff *skb, u8 *payload_ptr);
225 227
226/** 228/**
227 * enum batadv_dbg_level - available log levels
228 * @BATADV_DBG_BATMAN: OGM and TQ computations related messages
229 * @BATADV_DBG_ROUTES: route added / changed / deleted
230 * @BATADV_DBG_TT: translation table messages
231 * @BATADV_DBG_BLA: bridge loop avoidance messages
232 * @BATADV_DBG_DAT: ARP snooping and DAT related messages
233 * @BATADV_DBG_NC: network coding related messages
234 * @BATADV_DBG_MCAST: multicast related messages
235 * @BATADV_DBG_ALL: the union of all the above log levels
236 */
237enum batadv_dbg_level {
238 BATADV_DBG_BATMAN = BIT(0),
239 BATADV_DBG_ROUTES = BIT(1),
240 BATADV_DBG_TT = BIT(2),
241 BATADV_DBG_BLA = BIT(3),
242 BATADV_DBG_DAT = BIT(4),
243 BATADV_DBG_NC = BIT(5),
244 BATADV_DBG_MCAST = BIT(6),
245 BATADV_DBG_ALL = 127,
246};
247
248#ifdef CONFIG_BATMAN_ADV_DEBUG
249int batadv_debug_log(struct batadv_priv *bat_priv, const char *fmt, ...)
250__printf(2, 3);
251
252/* possibly ratelimited debug output */
253#define _batadv_dbg(type, bat_priv, ratelimited, fmt, arg...) \
254 do { \
255 if (atomic_read(&bat_priv->log_level) & type && \
256 (!ratelimited || net_ratelimit())) \
257 batadv_debug_log(bat_priv, fmt, ## arg);\
258 } \
259 while (0)
260#else /* !CONFIG_BATMAN_ADV_DEBUG */
261__printf(4, 5)
262static inline void _batadv_dbg(int type __always_unused,
263 struct batadv_priv *bat_priv __always_unused,
264 int ratelimited __always_unused,
265 const char *fmt __always_unused, ...)
266{
267}
268#endif
269
270#define batadv_dbg(type, bat_priv, arg...) \
271 _batadv_dbg(type, bat_priv, 0, ## arg)
272#define batadv_dbg_ratelimited(type, bat_priv, arg...) \
273 _batadv_dbg(type, bat_priv, 1, ## arg)
274
275#define batadv_info(net_dev, fmt, arg...) \
276 do { \
277 struct net_device *_netdev = (net_dev); \
278 struct batadv_priv *_batpriv = netdev_priv(_netdev); \
279 batadv_dbg(BATADV_DBG_ALL, _batpriv, fmt, ## arg); \
280 pr_info("%s: " fmt, _netdev->name, ## arg); \
281 } while (0)
282#define batadv_err(net_dev, fmt, arg...) \
283 do { \
284 struct net_device *_netdev = (net_dev); \
285 struct batadv_priv *_batpriv = netdev_priv(_netdev); \
286 batadv_dbg(BATADV_DBG_ALL, _batpriv, fmt, ## arg); \
287 pr_err("%s: " fmt, _netdev->name, ## arg); \
288 } while (0)
289
290/**
291 * batadv_compare_eth - Compare two not u16 aligned Ethernet addresses 229 * batadv_compare_eth - Compare two not u16 aligned Ethernet addresses
292 * @data1: Pointer to a six-byte array containing the Ethernet address 230 * @data1: Pointer to a six-byte array containing the Ethernet address
293 * @data2: Pointer other six-byte array containing the Ethernet address 231 * @data2: Pointer other six-byte array containing the Ethernet address
@@ -372,39 +310,6 @@ static inline u64 batadv_sum_counter(struct batadv_priv *bat_priv, size_t idx)
372 */ 310 */
373#define BATADV_SKB_CB(__skb) ((struct batadv_skb_cb *)&((__skb)->cb[0])) 311#define BATADV_SKB_CB(__skb) ((struct batadv_skb_cb *)&((__skb)->cb[0]))
374 312
375void batadv_tvlv_container_register(struct batadv_priv *bat_priv,
376 u8 type, u8 version,
377 void *tvlv_value, u16 tvlv_value_len);
378u16 batadv_tvlv_container_ogm_append(struct batadv_priv *bat_priv,
379 unsigned char **packet_buff,
380 int *packet_buff_len, int packet_min_len);
381void batadv_tvlv_ogm_receive(struct batadv_priv *bat_priv,
382 struct batadv_ogm_packet *batadv_ogm_packet,
383 struct batadv_orig_node *orig_node);
384void batadv_tvlv_container_unregister(struct batadv_priv *bat_priv,
385 u8 type, u8 version);
386
387void batadv_tvlv_handler_register(struct batadv_priv *bat_priv,
388 void (*optr)(struct batadv_priv *bat_priv,
389 struct batadv_orig_node *orig,
390 u8 flags,
391 void *tvlv_value,
392 u16 tvlv_value_len),
393 int (*uptr)(struct batadv_priv *bat_priv,
394 u8 *src, u8 *dst,
395 void *tvlv_value,
396 u16 tvlv_value_len),
397 u8 type, u8 version, u8 flags);
398void batadv_tvlv_handler_unregister(struct batadv_priv *bat_priv,
399 u8 type, u8 version);
400int batadv_tvlv_containers_process(struct batadv_priv *bat_priv,
401 bool ogm_source,
402 struct batadv_orig_node *orig_node,
403 u8 *src, u8 *dst,
404 void *tvlv_buff, u16 tvlv_buff_len);
405void batadv_tvlv_unicast_send(struct batadv_priv *bat_priv, u8 *src,
406 u8 *dst, u8 type, u8 version,
407 void *tvlv_value, u16 tvlv_value_len);
408unsigned short batadv_get_vid(struct sk_buff *skb, size_t header_len); 313unsigned short batadv_get_vid(struct sk_buff *skb, size_t header_len);
409bool batadv_vlan_ap_isola_get(struct batadv_priv *bat_priv, unsigned short vid); 314bool batadv_vlan_ap_isola_get(struct batadv_priv *bat_priv, unsigned short vid);
410 315
diff --git a/net/batman-adv/multicast.c b/net/batman-adv/multicast.c
index d3222db60fd0..cc915073a753 100644
--- a/net/batman-adv/multicast.c
+++ b/net/batman-adv/multicast.c
@@ -55,8 +55,10 @@
55 55
56#include "hard-interface.h" 56#include "hard-interface.h"
57#include "hash.h" 57#include "hash.h"
58#include "log.h"
58#include "packet.h" 59#include "packet.h"
59#include "translation-table.h" 60#include "translation-table.h"
61#include "tvlv.h"
60 62
61/** 63/**
62 * batadv_mcast_get_bridge - get the bridge on top of the softif if it exists 64 * batadv_mcast_get_bridge - get the bridge on top of the softif if it exists
diff --git a/net/batman-adv/netlink.c b/net/batman-adv/netlink.c
new file mode 100644
index 000000000000..231f8eaf075b
--- /dev/null
+++ b/net/batman-adv/netlink.c
@@ -0,0 +1,424 @@
1/* Copyright (C) 2016 B.A.T.M.A.N. contributors:
2 *
3 * Matthias Schiffer
4 *
5 * This program is free software; you can redistribute it and/or
6 * modify it under the terms of version 2 of the GNU General Public
7 * License as published by the Free Software Foundation.
8 *
9 * This program is distributed in the hope that it will be useful, but
10 * WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * General Public License for more details.
13 *
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, see <http://www.gnu.org/licenses/>.
16 */
17
18#include "netlink.h"
19#include "main.h"
20
21#include <linux/errno.h>
22#include <linux/fs.h>
23#include <linux/genetlink.h>
24#include <linux/if_ether.h>
25#include <linux/init.h>
26#include <linux/netdevice.h>
27#include <linux/netlink.h>
28#include <linux/printk.h>
29#include <linux/stddef.h>
30#include <linux/types.h>
31#include <net/genetlink.h>
32#include <net/netlink.h>
33#include <uapi/linux/batman_adv.h>
34
35#include "hard-interface.h"
36#include "soft-interface.h"
37#include "tp_meter.h"
38
39struct sk_buff;
40
41static struct genl_family batadv_netlink_family = {
42 .id = GENL_ID_GENERATE,
43 .hdrsize = 0,
44 .name = BATADV_NL_NAME,
45 .version = 1,
46 .maxattr = BATADV_ATTR_MAX,
47};
48
49/* multicast groups */
50enum batadv_netlink_multicast_groups {
51 BATADV_NL_MCGRP_TPMETER,
52};
53
54static struct genl_multicast_group batadv_netlink_mcgrps[] = {
55 [BATADV_NL_MCGRP_TPMETER] = { .name = BATADV_NL_MCAST_GROUP_TPMETER },
56};
57
58static struct nla_policy batadv_netlink_policy[NUM_BATADV_ATTR] = {
59 [BATADV_ATTR_VERSION] = { .type = NLA_STRING },
60 [BATADV_ATTR_ALGO_NAME] = { .type = NLA_STRING },
61 [BATADV_ATTR_MESH_IFINDEX] = { .type = NLA_U32 },
62 [BATADV_ATTR_MESH_IFNAME] = { .type = NLA_STRING },
63 [BATADV_ATTR_MESH_ADDRESS] = { .len = ETH_ALEN },
64 [BATADV_ATTR_HARD_IFINDEX] = { .type = NLA_U32 },
65 [BATADV_ATTR_HARD_IFNAME] = { .type = NLA_STRING },
66 [BATADV_ATTR_HARD_ADDRESS] = { .len = ETH_ALEN },
67 [BATADV_ATTR_ORIG_ADDRESS] = { .len = ETH_ALEN },
68 [BATADV_ATTR_TPMETER_RESULT] = { .type = NLA_U8 },
69 [BATADV_ATTR_TPMETER_TEST_TIME] = { .type = NLA_U32 },
70 [BATADV_ATTR_TPMETER_BYTES] = { .type = NLA_U64 },
71 [BATADV_ATTR_TPMETER_COOKIE] = { .type = NLA_U32 },
72};
73
74/**
75 * batadv_netlink_mesh_info_put - fill in generic information about mesh
76 * interface
77 * @msg: netlink message to be sent back
78 * @soft_iface: interface for which the data should be taken
79 *
80 * Return: 0 on success, < 0 on error
81 */
82static int
83batadv_netlink_mesh_info_put(struct sk_buff *msg, struct net_device *soft_iface)
84{
85 struct batadv_priv *bat_priv = netdev_priv(soft_iface);
86 struct batadv_hard_iface *primary_if = NULL;
87 struct net_device *hard_iface;
88 int ret = -ENOBUFS;
89
90 if (nla_put_string(msg, BATADV_ATTR_VERSION, BATADV_SOURCE_VERSION) ||
91 nla_put_string(msg, BATADV_ATTR_ALGO_NAME,
92 bat_priv->algo_ops->name) ||
93 nla_put_u32(msg, BATADV_ATTR_MESH_IFINDEX, soft_iface->ifindex) ||
94 nla_put_string(msg, BATADV_ATTR_MESH_IFNAME, soft_iface->name) ||
95 nla_put(msg, BATADV_ATTR_MESH_ADDRESS, ETH_ALEN,
96 soft_iface->dev_addr))
97 goto out;
98
99 primary_if = batadv_primary_if_get_selected(bat_priv);
100 if (primary_if && primary_if->if_status == BATADV_IF_ACTIVE) {
101 hard_iface = primary_if->net_dev;
102
103 if (nla_put_u32(msg, BATADV_ATTR_HARD_IFINDEX,
104 hard_iface->ifindex) ||
105 nla_put_string(msg, BATADV_ATTR_HARD_IFNAME,
106 hard_iface->name) ||
107 nla_put(msg, BATADV_ATTR_HARD_ADDRESS, ETH_ALEN,
108 hard_iface->dev_addr))
109 goto out;
110 }
111
112 ret = 0;
113
114 out:
115 if (primary_if)
116 batadv_hardif_put(primary_if);
117
118 return ret;
119}
120
121/**
122 * batadv_netlink_get_mesh_info - handle incoming BATADV_CMD_GET_MESH_INFO
123 * netlink request
124 * @skb: received netlink message
125 * @info: receiver information
126 *
127 * Return: 0 on success, < 0 on error
128 */
129static int
130batadv_netlink_get_mesh_info(struct sk_buff *skb, struct genl_info *info)
131{
132 struct net *net = genl_info_net(info);
133 struct net_device *soft_iface;
134 struct sk_buff *msg = NULL;
135 void *msg_head;
136 int ifindex;
137 int ret;
138
139 if (!info->attrs[BATADV_ATTR_MESH_IFINDEX])
140 return -EINVAL;
141
142 ifindex = nla_get_u32(info->attrs[BATADV_ATTR_MESH_IFINDEX]);
143 if (!ifindex)
144 return -EINVAL;
145
146 soft_iface = dev_get_by_index(net, ifindex);
147 if (!soft_iface || !batadv_softif_is_valid(soft_iface)) {
148 ret = -ENODEV;
149 goto out;
150 }
151
152 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
153 if (!msg) {
154 ret = -ENOMEM;
155 goto out;
156 }
157
158 msg_head = genlmsg_put(msg, info->snd_portid, info->snd_seq,
159 &batadv_netlink_family, 0,
160 BATADV_CMD_GET_MESH_INFO);
161 if (!msg_head) {
162 ret = -ENOBUFS;
163 goto out;
164 }
165
166 ret = batadv_netlink_mesh_info_put(msg, soft_iface);
167
168 out:
169 if (soft_iface)
170 dev_put(soft_iface);
171
172 if (ret) {
173 if (msg)
174 nlmsg_free(msg);
175 return ret;
176 }
177
178 genlmsg_end(msg, msg_head);
179 return genlmsg_reply(msg, info);
180}
181
182/**
183 * batadv_netlink_tp_meter_put - Fill information of started tp_meter session
184 * @msg: netlink message to be sent back
185 * @cookie: tp meter session cookie
186 *
187 * Return: 0 on success, < 0 on error
188 */
189static int
190batadv_netlink_tp_meter_put(struct sk_buff *msg, u32 cookie)
191{
192 if (nla_put_u32(msg, BATADV_ATTR_TPMETER_COOKIE, cookie))
193 return -ENOBUFS;
194
195 return 0;
196}
197
198/**
199 * batadv_netlink_tpmeter_notify - send tp_meter result via netlink to client
200 * @bat_priv: the bat priv with all the soft interface information
201 * @dst: destination of tp_meter session
202 * @result: reason for tp meter session stop
203 * @test_time: total time ot the tp_meter session
204 * @total_bytes: bytes acked to the receiver
205 * @cookie: cookie of tp_meter session
206 *
207 * Return: 0 on success, < 0 on error
208 */
209int batadv_netlink_tpmeter_notify(struct batadv_priv *bat_priv, const u8 *dst,
210 u8 result, u32 test_time, u64 total_bytes,
211 u32 cookie)
212{
213 struct sk_buff *msg;
214 void *hdr;
215 int ret;
216
217 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
218 if (!msg)
219 return -ENOMEM;
220
221 hdr = genlmsg_put(msg, 0, 0, &batadv_netlink_family, 0,
222 BATADV_CMD_TP_METER);
223 if (!hdr) {
224 ret = -ENOBUFS;
225 goto err_genlmsg;
226 }
227
228 if (nla_put_u32(msg, BATADV_ATTR_TPMETER_COOKIE, cookie))
229 goto nla_put_failure;
230
231 if (nla_put_u32(msg, BATADV_ATTR_TPMETER_TEST_TIME, test_time))
232 goto nla_put_failure;
233
234 if (nla_put_u64_64bit(msg, BATADV_ATTR_TPMETER_BYTES, total_bytes,
235 BATADV_ATTR_PAD))
236 goto nla_put_failure;
237
238 if (nla_put_u8(msg, BATADV_ATTR_TPMETER_RESULT, result))
239 goto nla_put_failure;
240
241 if (nla_put(msg, BATADV_ATTR_ORIG_ADDRESS, ETH_ALEN, dst))
242 goto nla_put_failure;
243
244 genlmsg_end(msg, hdr);
245
246 genlmsg_multicast_netns(&batadv_netlink_family,
247 dev_net(bat_priv->soft_iface), msg, 0,
248 BATADV_NL_MCGRP_TPMETER, GFP_KERNEL);
249
250 return 0;
251
252nla_put_failure:
253 genlmsg_cancel(msg, hdr);
254 ret = -EMSGSIZE;
255
256err_genlmsg:
257 nlmsg_free(msg);
258 return ret;
259}
260
261/**
262 * batadv_netlink_tp_meter_start - Start a new tp_meter session
263 * @skb: received netlink message
264 * @info: receiver information
265 *
266 * Return: 0 on success, < 0 on error
267 */
268static int
269batadv_netlink_tp_meter_start(struct sk_buff *skb, struct genl_info *info)
270{
271 struct net *net = genl_info_net(info);
272 struct net_device *soft_iface;
273 struct batadv_priv *bat_priv;
274 struct sk_buff *msg = NULL;
275 u32 test_length;
276 void *msg_head;
277 int ifindex;
278 u32 cookie;
279 u8 *dst;
280 int ret;
281
282 if (!info->attrs[BATADV_ATTR_MESH_IFINDEX])
283 return -EINVAL;
284
285 if (!info->attrs[BATADV_ATTR_ORIG_ADDRESS])
286 return -EINVAL;
287
288 if (!info->attrs[BATADV_ATTR_TPMETER_TEST_TIME])
289 return -EINVAL;
290
291 ifindex = nla_get_u32(info->attrs[BATADV_ATTR_MESH_IFINDEX]);
292 if (!ifindex)
293 return -EINVAL;
294
295 dst = nla_data(info->attrs[BATADV_ATTR_ORIG_ADDRESS]);
296
297 test_length = nla_get_u32(info->attrs[BATADV_ATTR_TPMETER_TEST_TIME]);
298
299 soft_iface = dev_get_by_index(net, ifindex);
300 if (!soft_iface || !batadv_softif_is_valid(soft_iface)) {
301 ret = -ENODEV;
302 goto out;
303 }
304
305 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
306 if (!msg) {
307 ret = -ENOMEM;
308 goto out;
309 }
310
311 msg_head = genlmsg_put(msg, info->snd_portid, info->snd_seq,
312 &batadv_netlink_family, 0,
313 BATADV_CMD_TP_METER);
314 if (!msg_head) {
315 ret = -ENOBUFS;
316 goto out;
317 }
318
319 bat_priv = netdev_priv(soft_iface);
320 batadv_tp_start(bat_priv, dst, test_length, &cookie);
321
322 ret = batadv_netlink_tp_meter_put(msg, cookie);
323
324 out:
325 if (soft_iface)
326 dev_put(soft_iface);
327
328 if (ret) {
329 if (msg)
330 nlmsg_free(msg);
331 return ret;
332 }
333
334 genlmsg_end(msg, msg_head);
335 return genlmsg_reply(msg, info);
336}
337
338/**
339 * batadv_netlink_tp_meter_start - Cancel a running tp_meter session
340 * @skb: received netlink message
341 * @info: receiver information
342 *
343 * Return: 0 on success, < 0 on error
344 */
345static int
346batadv_netlink_tp_meter_cancel(struct sk_buff *skb, struct genl_info *info)
347{
348 struct net *net = genl_info_net(info);
349 struct net_device *soft_iface;
350 struct batadv_priv *bat_priv;
351 int ifindex;
352 u8 *dst;
353 int ret = 0;
354
355 if (!info->attrs[BATADV_ATTR_MESH_IFINDEX])
356 return -EINVAL;
357
358 if (!info->attrs[BATADV_ATTR_ORIG_ADDRESS])
359 return -EINVAL;
360
361 ifindex = nla_get_u32(info->attrs[BATADV_ATTR_MESH_IFINDEX]);
362 if (!ifindex)
363 return -EINVAL;
364
365 dst = nla_data(info->attrs[BATADV_ATTR_ORIG_ADDRESS]);
366
367 soft_iface = dev_get_by_index(net, ifindex);
368 if (!soft_iface || !batadv_softif_is_valid(soft_iface)) {
369 ret = -ENODEV;
370 goto out;
371 }
372
373 bat_priv = netdev_priv(soft_iface);
374 batadv_tp_stop(bat_priv, dst, BATADV_TP_REASON_CANCEL);
375
376out:
377 if (soft_iface)
378 dev_put(soft_iface);
379
380 return ret;
381}
382
383static struct genl_ops batadv_netlink_ops[] = {
384 {
385 .cmd = BATADV_CMD_GET_MESH_INFO,
386 .flags = GENL_ADMIN_PERM,
387 .policy = batadv_netlink_policy,
388 .doit = batadv_netlink_get_mesh_info,
389 },
390 {
391 .cmd = BATADV_CMD_TP_METER,
392 .flags = GENL_ADMIN_PERM,
393 .policy = batadv_netlink_policy,
394 .doit = batadv_netlink_tp_meter_start,
395 },
396 {
397 .cmd = BATADV_CMD_TP_METER_CANCEL,
398 .flags = GENL_ADMIN_PERM,
399 .policy = batadv_netlink_policy,
400 .doit = batadv_netlink_tp_meter_cancel,
401 },
402};
403
404/**
405 * batadv_netlink_register - register batadv genl netlink family
406 */
407void __init batadv_netlink_register(void)
408{
409 int ret;
410
411 ret = genl_register_family_with_ops_groups(&batadv_netlink_family,
412 batadv_netlink_ops,
413 batadv_netlink_mcgrps);
414 if (ret)
415 pr_warn("unable to register netlink family");
416}
417
418/**
419 * batadv_netlink_unregister - unregister batadv genl netlink family
420 */
421void batadv_netlink_unregister(void)
422{
423 genl_unregister_family(&batadv_netlink_family);
424}
diff --git a/net/batman-adv/netlink.h b/net/batman-adv/netlink.h
new file mode 100644
index 000000000000..945653ab58c6
--- /dev/null
+++ b/net/batman-adv/netlink.h
@@ -0,0 +1,32 @@
1/* Copyright (C) 2016 B.A.T.M.A.N. contributors:
2 *
3 * Matthias Schiffer
4 *
5 * This program is free software; you can redistribute it and/or
6 * modify it under the terms of version 2 of the GNU General Public
7 * License as published by the Free Software Foundation.
8 *
9 * This program is distributed in the hope that it will be useful, but
10 * WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * General Public License for more details.
13 *
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, see <http://www.gnu.org/licenses/>.
16 */
17
18#ifndef _NET_BATMAN_ADV_NETLINK_H_
19#define _NET_BATMAN_ADV_NETLINK_H_
20
21#include "main.h"
22
23#include <linux/types.h>
24
25void batadv_netlink_register(void);
26void batadv_netlink_unregister(void);
27
28int batadv_netlink_tpmeter_notify(struct batadv_priv *bat_priv, const u8 *dst,
29 u8 result, u32 test_time, u64 total_bytes,
30 u32 cookie);
31
32#endif /* _NET_BATMAN_ADV_NETLINK_H_ */
diff --git a/net/batman-adv/network-coding.c b/net/batman-adv/network-coding.c
index 678f06865312..293ef4ffd4e1 100644
--- a/net/batman-adv/network-coding.c
+++ b/net/batman-adv/network-coding.c
@@ -51,10 +51,12 @@
51 51
52#include "hard-interface.h" 52#include "hard-interface.h"
53#include "hash.h" 53#include "hash.h"
54#include "log.h"
54#include "originator.h" 55#include "originator.h"
55#include "packet.h" 56#include "packet.h"
56#include "routing.h" 57#include "routing.h"
57#include "send.h" 58#include "send.h"
59#include "tvlv.h"
58 60
59static struct lock_class_key batadv_nc_coding_hash_lock_class_key; 61static struct lock_class_key batadv_nc_coding_hash_lock_class_key;
60static struct lock_class_key batadv_nc_decoding_hash_lock_class_key; 62static struct lock_class_key batadv_nc_decoding_hash_lock_class_key;
diff --git a/net/batman-adv/originator.c b/net/batman-adv/originator.c
index 076d258c92e1..7d1e5421f6bc 100644
--- a/net/batman-adv/originator.c
+++ b/net/batman-adv/originator.c
@@ -34,11 +34,13 @@
34#include <linux/spinlock.h> 34#include <linux/spinlock.h>
35#include <linux/workqueue.h> 35#include <linux/workqueue.h>
36 36
37#include "bat_algo.h"
37#include "distributed-arp-table.h" 38#include "distributed-arp-table.h"
38#include "fragmentation.h" 39#include "fragmentation.h"
39#include "gateway_client.h" 40#include "gateway_client.h"
40#include "hard-interface.h" 41#include "hard-interface.h"
41#include "hash.h" 42#include "hash.h"
43#include "log.h"
42#include "multicast.h" 44#include "multicast.h"
43#include "network-coding.h" 45#include "network-coding.h"
44#include "routing.h" 46#include "routing.h"
@@ -532,8 +534,8 @@ batadv_hardif_neigh_create(struct batadv_hard_iface *hard_iface,
532 534
533 kref_init(&hardif_neigh->refcount); 535 kref_init(&hardif_neigh->refcount);
534 536
535 if (bat_priv->bat_algo_ops->bat_hardif_neigh_init) 537 if (bat_priv->algo_ops->neigh.hardif_init)
536 bat_priv->bat_algo_ops->bat_hardif_neigh_init(hardif_neigh); 538 bat_priv->algo_ops->neigh.hardif_init(hardif_neigh);
537 539
538 hlist_add_head(&hardif_neigh->list, &hard_iface->neigh_list); 540 hlist_add_head(&hardif_neigh->list, &hard_iface->neigh_list);
539 541
@@ -704,17 +706,17 @@ int batadv_hardif_neigh_seq_print_text(struct seq_file *seq, void *offset)
704 seq_printf(seq, "[B.A.T.M.A.N. adv %s, MainIF/MAC: %s/%pM (%s %s)]\n", 706 seq_printf(seq, "[B.A.T.M.A.N. adv %s, MainIF/MAC: %s/%pM (%s %s)]\n",
705 BATADV_SOURCE_VERSION, primary_if->net_dev->name, 707 BATADV_SOURCE_VERSION, primary_if->net_dev->name,
706 primary_if->net_dev->dev_addr, net_dev->name, 708 primary_if->net_dev->dev_addr, net_dev->name,
707 bat_priv->bat_algo_ops->name); 709 bat_priv->algo_ops->name);
708 710
709 batadv_hardif_put(primary_if); 711 batadv_hardif_put(primary_if);
710 712
711 if (!bat_priv->bat_algo_ops->bat_neigh_print) { 713 if (!bat_priv->algo_ops->neigh.print) {
712 seq_puts(seq, 714 seq_puts(seq,
713 "No printing function for this routing protocol\n"); 715 "No printing function for this routing protocol\n");
714 return 0; 716 return 0;
715 } 717 }
716 718
717 bat_priv->bat_algo_ops->bat_neigh_print(bat_priv, seq); 719 bat_priv->algo_ops->neigh.print(bat_priv, seq);
718 return 0; 720 return 0;
719} 721}
720 722
@@ -765,8 +767,8 @@ static void batadv_orig_node_free_rcu(struct rcu_head *rcu)
765 767
766 batadv_frag_purge_orig(orig_node, NULL); 768 batadv_frag_purge_orig(orig_node, NULL);
767 769
768 if (orig_node->bat_priv->bat_algo_ops->bat_orig_free) 770 if (orig_node->bat_priv->algo_ops->orig.free)
769 orig_node->bat_priv->bat_algo_ops->bat_orig_free(orig_node); 771 orig_node->bat_priv->algo_ops->orig.free(orig_node);
770 772
771 kfree(orig_node->tt_buff); 773 kfree(orig_node->tt_buff);
772 kfree(orig_node); 774 kfree(orig_node);
@@ -1095,12 +1097,12 @@ batadv_find_best_neighbor(struct batadv_priv *bat_priv,
1095 struct batadv_hard_iface *if_outgoing) 1097 struct batadv_hard_iface *if_outgoing)
1096{ 1098{
1097 struct batadv_neigh_node *best = NULL, *neigh; 1099 struct batadv_neigh_node *best = NULL, *neigh;
1098 struct batadv_algo_ops *bao = bat_priv->bat_algo_ops; 1100 struct batadv_algo_ops *bao = bat_priv->algo_ops;
1099 1101
1100 rcu_read_lock(); 1102 rcu_read_lock();
1101 hlist_for_each_entry_rcu(neigh, &orig_node->neigh_list, list) { 1103 hlist_for_each_entry_rcu(neigh, &orig_node->neigh_list, list) {
1102 if (best && (bao->bat_neigh_cmp(neigh, if_outgoing, 1104 if (best && (bao->neigh.cmp(neigh, if_outgoing, best,
1103 best, if_outgoing) <= 0)) 1105 if_outgoing) <= 0))
1104 continue; 1106 continue;
1105 1107
1106 if (!kref_get_unless_zero(&neigh->refcount)) 1108 if (!kref_get_unless_zero(&neigh->refcount))
@@ -1252,18 +1254,17 @@ int batadv_orig_seq_print_text(struct seq_file *seq, void *offset)
1252 seq_printf(seq, "[B.A.T.M.A.N. adv %s, MainIF/MAC: %s/%pM (%s %s)]\n", 1254 seq_printf(seq, "[B.A.T.M.A.N. adv %s, MainIF/MAC: %s/%pM (%s %s)]\n",
1253 BATADV_SOURCE_VERSION, primary_if->net_dev->name, 1255 BATADV_SOURCE_VERSION, primary_if->net_dev->name,
1254 primary_if->net_dev->dev_addr, net_dev->name, 1256 primary_if->net_dev->dev_addr, net_dev->name,
1255 bat_priv->bat_algo_ops->name); 1257 bat_priv->algo_ops->name);
1256 1258
1257 batadv_hardif_put(primary_if); 1259 batadv_hardif_put(primary_if);
1258 1260
1259 if (!bat_priv->bat_algo_ops->bat_orig_print) { 1261 if (!bat_priv->algo_ops->orig.print) {
1260 seq_puts(seq, 1262 seq_puts(seq,
1261 "No printing function for this routing protocol\n"); 1263 "No printing function for this routing protocol\n");
1262 return 0; 1264 return 0;
1263 } 1265 }
1264 1266
1265 bat_priv->bat_algo_ops->bat_orig_print(bat_priv, seq, 1267 bat_priv->algo_ops->orig.print(bat_priv, seq, BATADV_IF_DEFAULT);
1266 BATADV_IF_DEFAULT);
1267 1268
1268 return 0; 1269 return 0;
1269} 1270}
@@ -1290,7 +1291,7 @@ int batadv_orig_hardif_seq_print_text(struct seq_file *seq, void *offset)
1290 } 1291 }
1291 1292
1292 bat_priv = netdev_priv(hard_iface->soft_iface); 1293 bat_priv = netdev_priv(hard_iface->soft_iface);
1293 if (!bat_priv->bat_algo_ops->bat_orig_print) { 1294 if (!bat_priv->algo_ops->orig.print) {
1294 seq_puts(seq, 1295 seq_puts(seq,
1295 "No printing function for this routing protocol\n"); 1296 "No printing function for this routing protocol\n");
1296 goto out; 1297 goto out;
@@ -1304,9 +1305,9 @@ int batadv_orig_hardif_seq_print_text(struct seq_file *seq, void *offset)
1304 seq_printf(seq, "[B.A.T.M.A.N. adv %s, IF/MAC: %s/%pM (%s %s)]\n", 1305 seq_printf(seq, "[B.A.T.M.A.N. adv %s, IF/MAC: %s/%pM (%s %s)]\n",
1305 BATADV_SOURCE_VERSION, hard_iface->net_dev->name, 1306 BATADV_SOURCE_VERSION, hard_iface->net_dev->name,
1306 hard_iface->net_dev->dev_addr, 1307 hard_iface->net_dev->dev_addr,
1307 hard_iface->soft_iface->name, bat_priv->bat_algo_ops->name); 1308 hard_iface->soft_iface->name, bat_priv->algo_ops->name);
1308 1309
1309 bat_priv->bat_algo_ops->bat_orig_print(bat_priv, seq, hard_iface); 1310 bat_priv->algo_ops->orig.print(bat_priv, seq, hard_iface);
1310 1311
1311out: 1312out:
1312 if (hard_iface) 1313 if (hard_iface)
@@ -1318,7 +1319,7 @@ int batadv_orig_hash_add_if(struct batadv_hard_iface *hard_iface,
1318 int max_if_num) 1319 int max_if_num)
1319{ 1320{
1320 struct batadv_priv *bat_priv = netdev_priv(hard_iface->soft_iface); 1321 struct batadv_priv *bat_priv = netdev_priv(hard_iface->soft_iface);
1321 struct batadv_algo_ops *bao = bat_priv->bat_algo_ops; 1322 struct batadv_algo_ops *bao = bat_priv->algo_ops;
1322 struct batadv_hashtable *hash = bat_priv->orig_hash; 1323 struct batadv_hashtable *hash = bat_priv->orig_hash;
1323 struct hlist_head *head; 1324 struct hlist_head *head;
1324 struct batadv_orig_node *orig_node; 1325 struct batadv_orig_node *orig_node;
@@ -1334,9 +1335,8 @@ int batadv_orig_hash_add_if(struct batadv_hard_iface *hard_iface,
1334 rcu_read_lock(); 1335 rcu_read_lock();
1335 hlist_for_each_entry_rcu(orig_node, head, hash_entry) { 1336 hlist_for_each_entry_rcu(orig_node, head, hash_entry) {
1336 ret = 0; 1337 ret = 0;
1337 if (bao->bat_orig_add_if) 1338 if (bao->orig.add_if)
1338 ret = bao->bat_orig_add_if(orig_node, 1339 ret = bao->orig.add_if(orig_node, max_if_num);
1339 max_if_num);
1340 if (ret == -ENOMEM) 1340 if (ret == -ENOMEM)
1341 goto err; 1341 goto err;
1342 } 1342 }
@@ -1358,7 +1358,7 @@ int batadv_orig_hash_del_if(struct batadv_hard_iface *hard_iface,
1358 struct hlist_head *head; 1358 struct hlist_head *head;
1359 struct batadv_hard_iface *hard_iface_tmp; 1359 struct batadv_hard_iface *hard_iface_tmp;
1360 struct batadv_orig_node *orig_node; 1360 struct batadv_orig_node *orig_node;
1361 struct batadv_algo_ops *bao = bat_priv->bat_algo_ops; 1361 struct batadv_algo_ops *bao = bat_priv->algo_ops;
1362 u32 i; 1362 u32 i;
1363 int ret; 1363 int ret;
1364 1364
@@ -1371,10 +1371,9 @@ int batadv_orig_hash_del_if(struct batadv_hard_iface *hard_iface,
1371 rcu_read_lock(); 1371 rcu_read_lock();
1372 hlist_for_each_entry_rcu(orig_node, head, hash_entry) { 1372 hlist_for_each_entry_rcu(orig_node, head, hash_entry) {
1373 ret = 0; 1373 ret = 0;
1374 if (bao->bat_orig_del_if) 1374 if (bao->orig.del_if)
1375 ret = bao->bat_orig_del_if(orig_node, 1375 ret = bao->orig.del_if(orig_node, max_if_num,
1376 max_if_num, 1376 hard_iface->if_num);
1377 hard_iface->if_num);
1378 if (ret == -ENOMEM) 1377 if (ret == -ENOMEM)
1379 goto err; 1378 goto err;
1380 } 1379 }
diff --git a/net/batman-adv/packet.h b/net/batman-adv/packet.h
index 71567794df17..6b011ff64dd8 100644
--- a/net/batman-adv/packet.h
+++ b/net/batman-adv/packet.h
@@ -21,6 +21,8 @@
21#include <asm/byteorder.h> 21#include <asm/byteorder.h>
22#include <linux/types.h> 22#include <linux/types.h>
23 23
24#define batadv_tp_is_error(n) ((u8)n > 127 ? 1 : 0)
25
24/** 26/**
25 * enum batadv_packettype - types for batman-adv encapsulated packets 27 * enum batadv_packettype - types for batman-adv encapsulated packets
26 * @BATADV_IV_OGM: originator messages for B.A.T.M.A.N. IV 28 * @BATADV_IV_OGM: originator messages for B.A.T.M.A.N. IV
@@ -93,6 +95,7 @@ enum batadv_icmp_packettype {
93 BATADV_ECHO_REQUEST = 8, 95 BATADV_ECHO_REQUEST = 8,
94 BATADV_TTL_EXCEEDED = 11, 96 BATADV_TTL_EXCEEDED = 11,
95 BATADV_PARAMETER_PROBLEM = 12, 97 BATADV_PARAMETER_PROBLEM = 12,
98 BATADV_TP = 15,
96}; 99};
97 100
98/** 101/**
@@ -285,6 +288,16 @@ struct batadv_elp_packet {
285#define BATADV_ELP_HLEN sizeof(struct batadv_elp_packet) 288#define BATADV_ELP_HLEN sizeof(struct batadv_elp_packet)
286 289
287/** 290/**
291 * enum batadv_icmp_user_cmd_type - types for batman-adv icmp cmd modes
292 * @BATADV_TP_START: start a throughput meter run
293 * @BATADV_TP_STOP: stop a throughput meter run
294 */
295enum batadv_icmp_user_cmd_type {
296 BATADV_TP_START = 0,
297 BATADV_TP_STOP = 2,
298};
299
300/**
288 * struct batadv_icmp_header - common members among all the ICMP packets 301 * struct batadv_icmp_header - common members among all the ICMP packets
289 * @packet_type: batman-adv packet type, part of the general header 302 * @packet_type: batman-adv packet type, part of the general header
290 * @version: batman-adv protocol version, part of the genereal header 303 * @version: batman-adv protocol version, part of the genereal header
@@ -334,6 +347,47 @@ struct batadv_icmp_packet {
334 __be16 seqno; 347 __be16 seqno;
335}; 348};
336 349
350/**
351 * struct batadv_icmp_tp_packet - ICMP TP Meter packet
352 * @packet_type: batman-adv packet type, part of the general header
353 * @version: batman-adv protocol version, part of the genereal header
354 * @ttl: time to live for this packet, part of the genereal header
355 * @msg_type: ICMP packet type
356 * @dst: address of the destination node
357 * @orig: address of the source node
358 * @uid: local ICMP socket identifier
359 * @subtype: TP packet subtype (see batadv_icmp_tp_subtype)
360 * @session: TP session identifier
361 * @seqno: the TP sequence number
362 * @timestamp: time when the packet has been sent. This value is filled in a
363 * TP_MSG and echoed back in the next TP_ACK so that the sender can compute the
364 * RTT. Since it is read only by the host which wrote it, there is no need to
365 * store it using network order
366 */
367struct batadv_icmp_tp_packet {
368 u8 packet_type;
369 u8 version;
370 u8 ttl;
371 u8 msg_type; /* see ICMP message types above */
372 u8 dst[ETH_ALEN];
373 u8 orig[ETH_ALEN];
374 u8 uid;
375 u8 subtype;
376 u8 session[2];
377 __be32 seqno;
378 __be32 timestamp;
379};
380
381/**
382 * enum batadv_icmp_tp_subtype - ICMP TP Meter packet subtypes
383 * @BATADV_TP_MSG: Msg from sender to receiver
384 * @BATADV_TP_ACK: acknowledgment from receiver to sender
385 */
386enum batadv_icmp_tp_subtype {
387 BATADV_TP_MSG = 0,
388 BATADV_TP_ACK,
389};
390
337#define BATADV_RR_LEN 16 391#define BATADV_RR_LEN 16
338 392
339/** 393/**
diff --git a/net/batman-adv/routing.c b/net/batman-adv/routing.c
index 319a58820197..af8e11933928 100644
--- a/net/batman-adv/routing.c
+++ b/net/batman-adv/routing.c
@@ -40,12 +40,15 @@
40#include "fragmentation.h" 40#include "fragmentation.h"
41#include "hard-interface.h" 41#include "hard-interface.h"
42#include "icmp_socket.h" 42#include "icmp_socket.h"
43#include "log.h"
43#include "network-coding.h" 44#include "network-coding.h"
44#include "originator.h" 45#include "originator.h"
45#include "packet.h" 46#include "packet.h"
46#include "send.h" 47#include "send.h"
47#include "soft-interface.h" 48#include "soft-interface.h"
49#include "tp_meter.h"
48#include "translation-table.h" 50#include "translation-table.h"
51#include "tvlv.h"
49 52
50static int batadv_route_unicast_packet(struct sk_buff *skb, 53static int batadv_route_unicast_packet(struct sk_buff *skb,
51 struct batadv_hard_iface *recv_if); 54 struct batadv_hard_iface *recv_if);
@@ -268,10 +271,19 @@ static int batadv_recv_my_icmp_packet(struct batadv_priv *bat_priv,
268 icmph->ttl = BATADV_TTL; 271 icmph->ttl = BATADV_TTL;
269 272
270 res = batadv_send_skb_to_orig(skb, orig_node, NULL); 273 res = batadv_send_skb_to_orig(skb, orig_node, NULL);
271 if (res != NET_XMIT_DROP) 274 if (res == -1)
272 ret = NET_RX_SUCCESS; 275 goto out;
276
277 ret = NET_RX_SUCCESS;
273 278
274 break; 279 break;
280 case BATADV_TP:
281 if (!pskb_may_pull(skb, sizeof(struct batadv_icmp_tp_packet)))
282 goto out;
283
284 batadv_tp_meter_recv(bat_priv, skb);
285 ret = NET_RX_SUCCESS;
286 goto out;
275 default: 287 default:
276 /* drop unknown type */ 288 /* drop unknown type */
277 goto out; 289 goto out;
@@ -290,7 +302,7 @@ static int batadv_recv_icmp_ttl_exceeded(struct batadv_priv *bat_priv,
290 struct batadv_hard_iface *primary_if = NULL; 302 struct batadv_hard_iface *primary_if = NULL;
291 struct batadv_orig_node *orig_node = NULL; 303 struct batadv_orig_node *orig_node = NULL;
292 struct batadv_icmp_packet *icmp_packet; 304 struct batadv_icmp_packet *icmp_packet;
293 int ret = NET_RX_DROP; 305 int res, ret = NET_RX_DROP;
294 306
295 icmp_packet = (struct batadv_icmp_packet *)skb->data; 307 icmp_packet = (struct batadv_icmp_packet *)skb->data;
296 308
@@ -321,7 +333,8 @@ static int batadv_recv_icmp_ttl_exceeded(struct batadv_priv *bat_priv,
321 icmp_packet->msg_type = BATADV_TTL_EXCEEDED; 333 icmp_packet->msg_type = BATADV_TTL_EXCEEDED;
322 icmp_packet->ttl = BATADV_TTL; 334 icmp_packet->ttl = BATADV_TTL;
323 335
324 if (batadv_send_skb_to_orig(skb, orig_node, NULL) != NET_XMIT_DROP) 336 res = batadv_send_skb_to_orig(skb, orig_node, NULL);
337 if (res != -1)
325 ret = NET_RX_SUCCESS; 338 ret = NET_RX_SUCCESS;
326 339
327out: 340out:
@@ -341,7 +354,7 @@ int batadv_recv_icmp_packet(struct sk_buff *skb,
341 struct ethhdr *ethhdr; 354 struct ethhdr *ethhdr;
342 struct batadv_orig_node *orig_node = NULL; 355 struct batadv_orig_node *orig_node = NULL;
343 int hdr_size = sizeof(struct batadv_icmp_header); 356 int hdr_size = sizeof(struct batadv_icmp_header);
344 int ret = NET_RX_DROP; 357 int res, ret = NET_RX_DROP;
345 358
346 /* drop packet if it has not necessary minimum size */ 359 /* drop packet if it has not necessary minimum size */
347 if (unlikely(!pskb_may_pull(skb, hdr_size))) 360 if (unlikely(!pskb_may_pull(skb, hdr_size)))
@@ -408,7 +421,8 @@ int batadv_recv_icmp_packet(struct sk_buff *skb,
408 icmph->ttl--; 421 icmph->ttl--;
409 422
410 /* route it */ 423 /* route it */
411 if (batadv_send_skb_to_orig(skb, orig_node, recv_if) != NET_XMIT_DROP) 424 res = batadv_send_skb_to_orig(skb, orig_node, recv_if);
425 if (res != -1)
412 ret = NET_RX_SUCCESS; 426 ret = NET_RX_SUCCESS;
413 427
414out: 428out:
@@ -469,7 +483,7 @@ batadv_find_router(struct batadv_priv *bat_priv,
469 struct batadv_orig_node *orig_node, 483 struct batadv_orig_node *orig_node,
470 struct batadv_hard_iface *recv_if) 484 struct batadv_hard_iface *recv_if)
471{ 485{
472 struct batadv_algo_ops *bao = bat_priv->bat_algo_ops; 486 struct batadv_algo_ops *bao = bat_priv->algo_ops;
473 struct batadv_neigh_node *first_candidate_router = NULL; 487 struct batadv_neigh_node *first_candidate_router = NULL;
474 struct batadv_neigh_node *next_candidate_router = NULL; 488 struct batadv_neigh_node *next_candidate_router = NULL;
475 struct batadv_neigh_node *router, *cand_router = NULL; 489 struct batadv_neigh_node *router, *cand_router = NULL;
@@ -523,9 +537,9 @@ batadv_find_router(struct batadv_priv *bat_priv,
523 /* alternative candidate should be good enough to be 537 /* alternative candidate should be good enough to be
524 * considered 538 * considered
525 */ 539 */
526 if (!bao->bat_neigh_is_similar_or_better(cand_router, 540 if (!bao->neigh.is_similar_or_better(cand_router,
527 cand->if_outgoing, 541 cand->if_outgoing, router,
528 router, recv_if)) 542 recv_if))
529 goto next; 543 goto next;
530 544
531 /* don't use the same router twice */ 545 /* don't use the same router twice */
@@ -645,6 +659,8 @@ static int batadv_route_unicast_packet(struct sk_buff *skb,
645 659
646 len = skb->len; 660 len = skb->len;
647 res = batadv_send_skb_to_orig(skb, orig_node, recv_if); 661 res = batadv_send_skb_to_orig(skb, orig_node, recv_if);
662 if (res == -1)
663 goto out;
648 664
649 /* translate transmit result into receive result */ 665 /* translate transmit result into receive result */
650 if (res == NET_XMIT_SUCCESS) { 666 if (res == NET_XMIT_SUCCESS) {
@@ -652,13 +668,10 @@ static int batadv_route_unicast_packet(struct sk_buff *skb,
652 batadv_inc_counter(bat_priv, BATADV_CNT_FORWARD); 668 batadv_inc_counter(bat_priv, BATADV_CNT_FORWARD);
653 batadv_add_counter(bat_priv, BATADV_CNT_FORWARD_BYTES, 669 batadv_add_counter(bat_priv, BATADV_CNT_FORWARD_BYTES,
654 len + ETH_HLEN); 670 len + ETH_HLEN);
655
656 ret = NET_RX_SUCCESS;
657 } else if (res == -EINPROGRESS) {
658 /* skb was buffered and consumed */
659 ret = NET_RX_SUCCESS;
660 } 671 }
661 672
673 ret = NET_RX_SUCCESS;
674
662out: 675out:
663 if (orig_node) 676 if (orig_node)
664 batadv_orig_node_put(orig_node); 677 batadv_orig_node_put(orig_node);
diff --git a/net/batman-adv/send.c b/net/batman-adv/send.c
index 59e695b5cfbd..3a10d87b4b76 100644
--- a/net/batman-adv/send.c
+++ b/net/batman-adv/send.c
@@ -20,10 +20,11 @@
20 20
21#include <linux/atomic.h> 21#include <linux/atomic.h>
22#include <linux/byteorder/generic.h> 22#include <linux/byteorder/generic.h>
23#include <linux/errno.h>
23#include <linux/etherdevice.h> 24#include <linux/etherdevice.h>
24#include <linux/fs.h> 25#include <linux/fs.h>
25#include <linux/if_ether.h>
26#include <linux/if.h> 26#include <linux/if.h>
27#include <linux/if_ether.h>
27#include <linux/jiffies.h> 28#include <linux/jiffies.h>
28#include <linux/kernel.h> 29#include <linux/kernel.h>
29#include <linux/kref.h> 30#include <linux/kref.h>
@@ -42,6 +43,7 @@
42#include "fragmentation.h" 43#include "fragmentation.h"
43#include "gateway_client.h" 44#include "gateway_client.h"
44#include "hard-interface.h" 45#include "hard-interface.h"
46#include "log.h"
45#include "network-coding.h" 47#include "network-coding.h"
46#include "originator.h" 48#include "originator.h"
47#include "routing.h" 49#include "routing.h"
@@ -71,6 +73,7 @@ int batadv_send_skb_packet(struct sk_buff *skb,
71{ 73{
72 struct batadv_priv *bat_priv; 74 struct batadv_priv *bat_priv;
73 struct ethhdr *ethhdr; 75 struct ethhdr *ethhdr;
76 int ret;
74 77
75 bat_priv = netdev_priv(hard_iface->soft_iface); 78 bat_priv = netdev_priv(hard_iface->soft_iface);
76 79
@@ -108,8 +111,15 @@ int batadv_send_skb_packet(struct sk_buff *skb,
108 /* dev_queue_xmit() returns a negative result on error. However on 111 /* dev_queue_xmit() returns a negative result on error. However on
109 * congestion and traffic shaping, it drops and returns NET_XMIT_DROP 112 * congestion and traffic shaping, it drops and returns NET_XMIT_DROP
110 * (which is > 0). This will not be treated as an error. 113 * (which is > 0). This will not be treated as an error.
114 *
115 * a negative value cannot be returned because it could be interepreted
116 * as not consumed skb by callers of batadv_send_skb_to_orig.
111 */ 117 */
112 return dev_queue_xmit(skb); 118 ret = dev_queue_xmit(skb);
119 if (ret < 0)
120 ret = NET_XMIT_DROP;
121
122 return ret;
113send_skb_err: 123send_skb_err:
114 kfree_skb(skb); 124 kfree_skb(skb);
115 return NET_XMIT_DROP; 125 return NET_XMIT_DROP;
@@ -155,8 +165,11 @@ int batadv_send_unicast_skb(struct sk_buff *skb,
155 * host, NULL can be passed as recv_if and no interface alternating is 165 * host, NULL can be passed as recv_if and no interface alternating is
156 * attempted. 166 * attempted.
157 * 167 *
158 * Return: NET_XMIT_SUCCESS on success, NET_XMIT_DROP on failure, or 168 * Return: -1 on failure (and the skb is not consumed), -EINPROGRESS if the
159 * -EINPROGRESS if the skb is buffered for later transmit. 169 * skb is buffered for later transmit or the NET_XMIT status returned by the
170 * lower routine if the packet has been passed down.
171 *
172 * If the returning value is not -1 the skb has been consumed.
160 */ 173 */
161int batadv_send_skb_to_orig(struct sk_buff *skb, 174int batadv_send_skb_to_orig(struct sk_buff *skb,
162 struct batadv_orig_node *orig_node, 175 struct batadv_orig_node *orig_node,
@@ -164,7 +177,7 @@ int batadv_send_skb_to_orig(struct sk_buff *skb,
164{ 177{
165 struct batadv_priv *bat_priv = orig_node->bat_priv; 178 struct batadv_priv *bat_priv = orig_node->bat_priv;
166 struct batadv_neigh_node *neigh_node; 179 struct batadv_neigh_node *neigh_node;
167 int ret = NET_XMIT_DROP; 180 int ret = -1;
168 181
169 /* batadv_find_router() increases neigh_nodes refcount if found. */ 182 /* batadv_find_router() increases neigh_nodes refcount if found. */
170 neigh_node = batadv_find_router(bat_priv, orig_node, recv_if); 183 neigh_node = batadv_find_router(bat_priv, orig_node, recv_if);
@@ -177,8 +190,7 @@ int batadv_send_skb_to_orig(struct sk_buff *skb,
177 if (atomic_read(&bat_priv->fragmentation) && 190 if (atomic_read(&bat_priv->fragmentation) &&
178 skb->len > neigh_node->if_incoming->net_dev->mtu) { 191 skb->len > neigh_node->if_incoming->net_dev->mtu) {
179 /* Fragment and send packet. */ 192 /* Fragment and send packet. */
180 if (batadv_frag_send_packet(skb, orig_node, neigh_node)) 193 ret = batadv_frag_send_packet(skb, orig_node, neigh_node);
181 ret = NET_XMIT_SUCCESS;
182 194
183 goto out; 195 goto out;
184 } 196 }
@@ -187,12 +199,10 @@ int batadv_send_skb_to_orig(struct sk_buff *skb,
187 * (i.e. being forwarded). If the packet originates from this node or if 199 * (i.e. being forwarded). If the packet originates from this node or if
188 * network coding fails, then send the packet as usual. 200 * network coding fails, then send the packet as usual.
189 */ 201 */
190 if (recv_if && batadv_nc_skb_forward(skb, neigh_node)) { 202 if (recv_if && batadv_nc_skb_forward(skb, neigh_node))
191 ret = -EINPROGRESS; 203 ret = -EINPROGRESS;
192 } else { 204 else
193 batadv_send_unicast_skb(skb, neigh_node); 205 ret = batadv_send_unicast_skb(skb, neigh_node);
194 ret = NET_XMIT_SUCCESS;
195 }
196 206
197out: 207out:
198 if (neigh_node) 208 if (neigh_node)
@@ -318,7 +328,7 @@ int batadv_send_skb_unicast(struct batadv_priv *bat_priv,
318{ 328{
319 struct batadv_unicast_packet *unicast_packet; 329 struct batadv_unicast_packet *unicast_packet;
320 struct ethhdr *ethhdr; 330 struct ethhdr *ethhdr;
321 int ret = NET_XMIT_DROP; 331 int res, ret = NET_XMIT_DROP;
322 332
323 if (!orig_node) 333 if (!orig_node)
324 goto out; 334 goto out;
@@ -355,7 +365,8 @@ int batadv_send_skb_unicast(struct batadv_priv *bat_priv,
355 if (batadv_tt_global_client_is_roaming(bat_priv, ethhdr->h_dest, vid)) 365 if (batadv_tt_global_client_is_roaming(bat_priv, ethhdr->h_dest, vid))
356 unicast_packet->ttvn = unicast_packet->ttvn - 1; 366 unicast_packet->ttvn = unicast_packet->ttvn - 1;
357 367
358 if (batadv_send_skb_to_orig(skb, orig_node, NULL) != NET_XMIT_DROP) 368 res = batadv_send_skb_to_orig(skb, orig_node, NULL);
369 if (res != -1)
359 ret = NET_XMIT_SUCCESS; 370 ret = NET_XMIT_SUCCESS;
360 371
361out: 372out:
diff --git a/net/batman-adv/soft-interface.c b/net/batman-adv/soft-interface.c
index 4ba894ca8b2a..7527c0652dd5 100644
--- a/net/batman-adv/soft-interface.c
+++ b/net/batman-adv/soft-interface.c
@@ -48,6 +48,7 @@
48#include <linux/types.h> 48#include <linux/types.h>
49#include <linux/workqueue.h> 49#include <linux/workqueue.h>
50 50
51#include "bat_algo.h"
51#include "bridge_loop_avoidance.h" 52#include "bridge_loop_avoidance.h"
52#include "debugfs.h" 53#include "debugfs.h"
53#include "distributed-arp-table.h" 54#include "distributed-arp-table.h"
@@ -841,6 +842,8 @@ static int batadv_softif_init_late(struct net_device *dev)
841#ifdef CONFIG_BATMAN_ADV_BLA 842#ifdef CONFIG_BATMAN_ADV_BLA
842 atomic_set(&bat_priv->bla.num_requests, 0); 843 atomic_set(&bat_priv->bla.num_requests, 0);
843#endif 844#endif
845 atomic_set(&bat_priv->tp_num, 0);
846
844 bat_priv->tt.last_changeset = NULL; 847 bat_priv->tt.last_changeset = NULL;
845 bat_priv->tt.last_changeset_len = 0; 848 bat_priv->tt.last_changeset_len = 0;
846 bat_priv->isolation_mark = 0; 849 bat_priv->isolation_mark = 0;
diff --git a/net/batman-adv/sysfs.c b/net/batman-adv/sysfs.c
index 233abcf33c03..fe9ca94ddee2 100644
--- a/net/batman-adv/sysfs.c
+++ b/net/batman-adv/sysfs.c
@@ -25,8 +25,8 @@
25#include <linux/fs.h> 25#include <linux/fs.h>
26#include <linux/if.h> 26#include <linux/if.h>
27#include <linux/if_vlan.h> 27#include <linux/if_vlan.h>
28#include <linux/kref.h>
29#include <linux/kernel.h> 28#include <linux/kernel.h>
29#include <linux/kref.h>
30#include <linux/netdevice.h> 30#include <linux/netdevice.h>
31#include <linux/printk.h> 31#include <linux/printk.h>
32#include <linux/rculist.h> 32#include <linux/rculist.h>
@@ -38,11 +38,12 @@
38#include <linux/string.h> 38#include <linux/string.h>
39#include <linux/stringify.h> 39#include <linux/stringify.h>
40 40
41#include "bridge_loop_avoidance.h"
41#include "distributed-arp-table.h" 42#include "distributed-arp-table.h"
42#include "gateway_client.h" 43#include "gateway_client.h"
43#include "gateway_common.h" 44#include "gateway_common.h"
44#include "bridge_loop_avoidance.h"
45#include "hard-interface.h" 45#include "hard-interface.h"
46#include "log.h"
46#include "network-coding.h" 47#include "network-coding.h"
47#include "packet.h" 48#include "packet.h"
48#include "soft-interface.h" 49#include "soft-interface.h"
@@ -411,7 +412,7 @@ static ssize_t batadv_show_bat_algo(struct kobject *kobj,
411{ 412{
412 struct batadv_priv *bat_priv = batadv_kobj_to_batpriv(kobj); 413 struct batadv_priv *bat_priv = batadv_kobj_to_batpriv(kobj);
413 414
414 return sprintf(buff, "%s\n", bat_priv->bat_algo_ops->name); 415 return sprintf(buff, "%s\n", bat_priv->algo_ops->name);
415} 416}
416 417
417static void batadv_post_gw_reselect(struct net_device *net_dev) 418static void batadv_post_gw_reselect(struct net_device *net_dev)
diff --git a/net/batman-adv/tp_meter.c b/net/batman-adv/tp_meter.c
new file mode 100644
index 000000000000..2333777f919d
--- /dev/null
+++ b/net/batman-adv/tp_meter.c
@@ -0,0 +1,1507 @@
1/* Copyright (C) 2012-2016 B.A.T.M.A.N. contributors:
2 *
3 * Edo Monticelli, Antonio Quartulli
4 *
5 * This program is free software; you can redistribute it and/or
6 * modify it under the terms of version 2 of the GNU General Public
7 * License as published by the Free Software Foundation.
8 *
9 * This program is distributed in the hope that it will be useful, but
10 * WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * General Public License for more details.
13 *
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, see <http://www.gnu.org/licenses/>.
16 */
17
18#include "tp_meter.h"
19#include "main.h"
20
21#include <linux/atomic.h>
22#include <linux/bug.h>
23#include <linux/byteorder/generic.h>
24#include <linux/cache.h>
25#include <linux/compiler.h>
26#include <linux/device.h>
27#include <linux/etherdevice.h>
28#include <linux/fs.h>
29#include <linux/if_ether.h>
30#include <linux/jiffies.h>
31#include <linux/kernel.h>
32#include <linux/kref.h>
33#include <linux/kthread.h>
34#include <linux/list.h>
35#include <linux/netdevice.h>
36#include <linux/param.h>
37#include <linux/printk.h>
38#include <linux/random.h>
39#include <linux/rculist.h>
40#include <linux/rcupdate.h>
41#include <linux/sched.h>
42#include <linux/skbuff.h>
43#include <linux/slab.h>
44#include <linux/spinlock.h>
45#include <linux/stddef.h>
46#include <linux/string.h>
47#include <linux/timer.h>
48#include <linux/wait.h>
49#include <linux/workqueue.h>
50#include <uapi/linux/batman_adv.h>
51
52#include "hard-interface.h"
53#include "log.h"
54#include "netlink.h"
55#include "originator.h"
56#include "packet.h"
57#include "send.h"
58
59/**
60 * BATADV_TP_DEF_TEST_LENGTH - Default test length if not specified by the user
61 * in milliseconds
62 */
63#define BATADV_TP_DEF_TEST_LENGTH 10000
64
65/**
66 * BATADV_TP_AWND - Advertised window by the receiver (in bytes)
67 */
68#define BATADV_TP_AWND 0x20000000
69
70/**
71 * BATADV_TP_RECV_TIMEOUT - Receiver activity timeout. If the receiver does not
72 * get anything for such amount of milliseconds, the connection is killed
73 */
74#define BATADV_TP_RECV_TIMEOUT 1000
75
76/**
77 * BATADV_TP_MAX_RTO - Maximum sender timeout. If the sender RTO gets beyond
78 * such amound of milliseconds, the receiver is considered unreachable and the
79 * connection is killed
80 */
81#define BATADV_TP_MAX_RTO 30000
82
83/**
84 * BATADV_TP_FIRST_SEQ - First seqno of each session. The number is rather high
85 * in order to immediately trigger a wrap around (test purposes)
86 */
87#define BATADV_TP_FIRST_SEQ ((u32)-1 - 2000)
88
89/**
90 * BATADV_TP_PLEN - length of the payload (data after the batadv_unicast header)
91 * to simulate
92 */
93#define BATADV_TP_PLEN (BATADV_TP_PACKET_LEN - ETH_HLEN - \
94 sizeof(struct batadv_unicast_packet))
95
96static u8 batadv_tp_prerandom[4096] __read_mostly;
97
98/**
99 * batadv_tp_session_cookie - generate session cookie based on session ids
100 * @session: TP session identifier
101 * @icmp_uid: icmp pseudo uid of the tp session
102 *
103 * Return: 32 bit tp_meter session cookie
104 */
105static u32 batadv_tp_session_cookie(const u8 session[2], u8 icmp_uid)
106{
107 u32 cookie;
108
109 cookie = icmp_uid << 16;
110 cookie |= session[0] << 8;
111 cookie |= session[1];
112
113 return cookie;
114}
115
116/**
117 * batadv_tp_cwnd - compute the new cwnd size
118 * @base: base cwnd size value
119 * @increment: the value to add to base to get the new size
120 * @min: minumim cwnd value (usually MSS)
121 *
122 * Return the new cwnd size and ensures it does not exceed the Advertised
123 * Receiver Window size. It is wrap around safe.
124 * For details refer to Section 3.1 of RFC5681
125 *
126 * Return: new congestion window size in bytes
127 */
128static u32 batadv_tp_cwnd(u32 base, u32 increment, u32 min)
129{
130 u32 new_size = base + increment;
131
132 /* check for wrap-around */
133 if (new_size < base)
134 new_size = (u32)ULONG_MAX;
135
136 new_size = min_t(u32, new_size, BATADV_TP_AWND);
137
138 return max_t(u32, new_size, min);
139}
140
141/**
142 * batadv_tp_updated_cwnd - update the Congestion Windows
143 * @tp_vars: the private data of the current TP meter session
144 * @mss: maximum segment size of transmission
145 *
146 * 1) if the session is in Slow Start, the CWND has to be increased by 1
147 * MSS every unique received ACK
148 * 2) if the session is in Congestion Avoidance, the CWND has to be
149 * increased by MSS * MSS / CWND for every unique received ACK
150 */
151static void batadv_tp_update_cwnd(struct batadv_tp_vars *tp_vars, u32 mss)
152{
153 spin_lock_bh(&tp_vars->cwnd_lock);
154
155 /* slow start... */
156 if (tp_vars->cwnd <= tp_vars->ss_threshold) {
157 tp_vars->dec_cwnd = 0;
158 tp_vars->cwnd = batadv_tp_cwnd(tp_vars->cwnd, mss, mss);
159 spin_unlock_bh(&tp_vars->cwnd_lock);
160 return;
161 }
162
163 /* increment CWND at least of 1 (section 3.1 of RFC5681) */
164 tp_vars->dec_cwnd += max_t(u32, 1U << 3,
165 ((mss * mss) << 6) / (tp_vars->cwnd << 3));
166 if (tp_vars->dec_cwnd < (mss << 3)) {
167 spin_unlock_bh(&tp_vars->cwnd_lock);
168 return;
169 }
170
171 tp_vars->cwnd = batadv_tp_cwnd(tp_vars->cwnd, mss, mss);
172 tp_vars->dec_cwnd = 0;
173
174 spin_unlock_bh(&tp_vars->cwnd_lock);
175}
176
177/**
178 * batadv_tp_update_rto - calculate new retransmission timeout
179 * @tp_vars: the private data of the current TP meter session
180 * @new_rtt: new roundtrip time in msec
181 */
182static void batadv_tp_update_rto(struct batadv_tp_vars *tp_vars,
183 u32 new_rtt)
184{
185 long m = new_rtt;
186
187 /* RTT update
188 * Details in Section 2.2 and 2.3 of RFC6298
189 *
190 * It's tricky to understand. Don't lose hair please.
191 * Inspired by tcp_rtt_estimator() tcp_input.c
192 */
193 if (tp_vars->srtt != 0) {
194 m -= (tp_vars->srtt >> 3); /* m is now error in rtt est */
195 tp_vars->srtt += m; /* rtt = 7/8 srtt + 1/8 new */
196 if (m < 0)
197 m = -m;
198
199 m -= (tp_vars->rttvar >> 2);
200 tp_vars->rttvar += m; /* mdev ~= 3/4 rttvar + 1/4 new */
201 } else {
202 /* first measure getting in */
203 tp_vars->srtt = m << 3; /* take the measured time to be srtt */
204 tp_vars->rttvar = m << 1; /* new_rtt / 2 */
205 }
206
207 /* rto = srtt + 4 * rttvar.
208 * rttvar is scaled by 4, therefore doesn't need to be multiplied
209 */
210 tp_vars->rto = (tp_vars->srtt >> 3) + tp_vars->rttvar;
211}
212
213/**
214 * batadv_tp_batctl_notify - send client status result to client
215 * @reason: reason for tp meter session stop
216 * @dst: destination of tp_meter session
217 * @bat_priv: the bat priv with all the soft interface information
218 * @start_time: start of transmission in jiffies
219 * @total_sent: bytes acked to the receiver
220 * @cookie: cookie of tp_meter session
221 */
222static void batadv_tp_batctl_notify(enum batadv_tp_meter_reason reason,
223 const u8 *dst, struct batadv_priv *bat_priv,
224 unsigned long start_time, u64 total_sent,
225 u32 cookie)
226{
227 u32 test_time;
228 u8 result;
229 u32 total_bytes;
230
231 if (!batadv_tp_is_error(reason)) {
232 result = BATADV_TP_REASON_COMPLETE;
233 test_time = jiffies_to_msecs(jiffies - start_time);
234 total_bytes = total_sent;
235 } else {
236 result = reason;
237 test_time = 0;
238 total_bytes = 0;
239 }
240
241 batadv_netlink_tpmeter_notify(bat_priv, dst, result, test_time,
242 total_bytes, cookie);
243}
244
245/**
246 * batadv_tp_batctl_error_notify - send client error result to client
247 * @reason: reason for tp meter session stop
248 * @dst: destination of tp_meter session
249 * @bat_priv: the bat priv with all the soft interface information
250 * @cookie: cookie of tp_meter session
251 */
252static void batadv_tp_batctl_error_notify(enum batadv_tp_meter_reason reason,
253 const u8 *dst,
254 struct batadv_priv *bat_priv,
255 u32 cookie)
256{
257 batadv_tp_batctl_notify(reason, dst, bat_priv, 0, 0, cookie);
258}
259
260/**
261 * batadv_tp_list_find - find a tp_vars object in the global list
262 * @bat_priv: the bat priv with all the soft interface information
263 * @dst: the other endpoint MAC address to look for
264 *
265 * Look for a tp_vars object matching dst as end_point and return it after
266 * having incremented the refcounter. Return NULL is not found
267 *
268 * Return: matching tp_vars or NULL when no tp_vars with @dst was found
269 */
270static struct batadv_tp_vars *batadv_tp_list_find(struct batadv_priv *bat_priv,
271 const u8 *dst)
272{
273 struct batadv_tp_vars *pos, *tp_vars = NULL;
274
275 rcu_read_lock();
276 hlist_for_each_entry_rcu(pos, &bat_priv->tp_list, list) {
277 if (!batadv_compare_eth(pos->other_end, dst))
278 continue;
279
280 /* most of the time this function is invoked during the normal
281 * process..it makes sens to pay more when the session is
282 * finished and to speed the process up during the measurement
283 */
284 if (unlikely(!kref_get_unless_zero(&pos->refcount)))
285 continue;
286
287 tp_vars = pos;
288 break;
289 }
290 rcu_read_unlock();
291
292 return tp_vars;
293}
294
295/**
296 * batadv_tp_list_find_session - find tp_vars session object in the global list
297 * @bat_priv: the bat priv with all the soft interface information
298 * @dst: the other endpoint MAC address to look for
299 * @session: session identifier
300 *
301 * Look for a tp_vars object matching dst as end_point, session as tp meter
302 * session and return it after having incremented the refcounter. Return NULL
303 * is not found
304 *
305 * Return: matching tp_vars or NULL when no tp_vars was found
306 */
307static struct batadv_tp_vars *
308batadv_tp_list_find_session(struct batadv_priv *bat_priv, const u8 *dst,
309 const u8 *session)
310{
311 struct batadv_tp_vars *pos, *tp_vars = NULL;
312
313 rcu_read_lock();
314 hlist_for_each_entry_rcu(pos, &bat_priv->tp_list, list) {
315 if (!batadv_compare_eth(pos->other_end, dst))
316 continue;
317
318 if (memcmp(pos->session, session, sizeof(pos->session)) != 0)
319 continue;
320
321 /* most of the time this function is invoked during the normal
322 * process..it makes sense to pay more when the session is
323 * finished and to speed the process up during the measurement
324 */
325 if (unlikely(!kref_get_unless_zero(&pos->refcount)))
326 continue;
327
328 tp_vars = pos;
329 break;
330 }
331 rcu_read_unlock();
332
333 return tp_vars;
334}
335
336/**
337 * batadv_tp_vars_release - release batadv_tp_vars from lists and queue for
338 * free after rcu grace period
339 * @ref: kref pointer of the batadv_tp_vars
340 */
341static void batadv_tp_vars_release(struct kref *ref)
342{
343 struct batadv_tp_vars *tp_vars;
344 struct batadv_tp_unacked *un, *safe;
345
346 tp_vars = container_of(ref, struct batadv_tp_vars, refcount);
347
348 /* lock should not be needed because this object is now out of any
349 * context!
350 */
351 spin_lock_bh(&tp_vars->unacked_lock);
352 list_for_each_entry_safe(un, safe, &tp_vars->unacked_list, list) {
353 list_del(&un->list);
354 kfree(un);
355 }
356 spin_unlock_bh(&tp_vars->unacked_lock);
357
358 kfree_rcu(tp_vars, rcu);
359}
360
361/**
362 * batadv_tp_vars_put - decrement the batadv_tp_vars refcounter and possibly
363 * release it
364 * @tp_vars: the private data of the current TP meter session to be free'd
365 */
366static void batadv_tp_vars_put(struct batadv_tp_vars *tp_vars)
367{
368 kref_put(&tp_vars->refcount, batadv_tp_vars_release);
369}
370
371/**
372 * batadv_tp_sender_cleanup - cleanup sender data and drop and timer
373 * @bat_priv: the bat priv with all the soft interface information
374 * @tp_vars: the private data of the current TP meter session to cleanup
375 */
376static void batadv_tp_sender_cleanup(struct batadv_priv *bat_priv,
377 struct batadv_tp_vars *tp_vars)
378{
379 cancel_delayed_work(&tp_vars->finish_work);
380
381 spin_lock_bh(&tp_vars->bat_priv->tp_list_lock);
382 hlist_del_rcu(&tp_vars->list);
383 spin_unlock_bh(&tp_vars->bat_priv->tp_list_lock);
384
385 /* drop list reference */
386 batadv_tp_vars_put(tp_vars);
387
388 atomic_dec(&tp_vars->bat_priv->tp_num);
389
390 /* kill the timer and remove its reference */
391 del_timer_sync(&tp_vars->timer);
392 /* the worker might have rearmed itself therefore we kill it again. Note
393 * that if the worker should run again before invoking the following
394 * del_timer(), it would not re-arm itself once again because the status
395 * is OFF now
396 */
397 del_timer(&tp_vars->timer);
398 batadv_tp_vars_put(tp_vars);
399}
400
401/**
402 * batadv_tp_sender_end - print info about ended session and inform client
403 * @bat_priv: the bat priv with all the soft interface information
404 * @tp_vars: the private data of the current TP meter session
405 */
406static void batadv_tp_sender_end(struct batadv_priv *bat_priv,
407 struct batadv_tp_vars *tp_vars)
408{
409 u32 session_cookie;
410
411 batadv_dbg(BATADV_DBG_TP_METER, bat_priv,
412 "Test towards %pM finished..shutting down (reason=%d)\n",
413 tp_vars->other_end, tp_vars->reason);
414
415 batadv_dbg(BATADV_DBG_TP_METER, bat_priv,
416 "Last timing stats: SRTT=%ums RTTVAR=%ums RTO=%ums\n",
417 tp_vars->srtt >> 3, tp_vars->rttvar >> 2, tp_vars->rto);
418
419 batadv_dbg(BATADV_DBG_TP_METER, bat_priv,
420 "Final values: cwnd=%u ss_threshold=%u\n",
421 tp_vars->cwnd, tp_vars->ss_threshold);
422
423 session_cookie = batadv_tp_session_cookie(tp_vars->session,
424 tp_vars->icmp_uid);
425
426 batadv_tp_batctl_notify(tp_vars->reason,
427 tp_vars->other_end,
428 bat_priv,
429 tp_vars->start_time,
430 atomic64_read(&tp_vars->tot_sent),
431 session_cookie);
432}
433
434/**
435 * batadv_tp_sender_shutdown - let sender thread/timer stop gracefully
436 * @tp_vars: the private data of the current TP meter session
437 * @reason: reason for tp meter session stop
438 */
439static void batadv_tp_sender_shutdown(struct batadv_tp_vars *tp_vars,
440 enum batadv_tp_meter_reason reason)
441{
442 if (!atomic_dec_and_test(&tp_vars->sending))
443 return;
444
445 tp_vars->reason = reason;
446}
447
448/**
449 * batadv_tp_sender_finish - stop sender session after test_length was reached
450 * @work: delayed work reference of the related tp_vars
451 */
452static void batadv_tp_sender_finish(struct work_struct *work)
453{
454 struct delayed_work *delayed_work;
455 struct batadv_tp_vars *tp_vars;
456
457 delayed_work = to_delayed_work(work);
458 tp_vars = container_of(delayed_work, struct batadv_tp_vars,
459 finish_work);
460
461 batadv_tp_sender_shutdown(tp_vars, BATADV_TP_REASON_COMPLETE);
462}
463
464/**
465 * batadv_tp_reset_sender_timer - reschedule the sender timer
466 * @tp_vars: the private TP meter data for this session
467 *
468 * Reschedule the timer using tp_vars->rto as delay
469 */
470static void batadv_tp_reset_sender_timer(struct batadv_tp_vars *tp_vars)
471{
472 /* most of the time this function is invoked while normal packet
473 * reception...
474 */
475 if (unlikely(atomic_read(&tp_vars->sending) == 0))
476 /* timer ref will be dropped in batadv_tp_sender_cleanup */
477 return;
478
479 mod_timer(&tp_vars->timer, jiffies + msecs_to_jiffies(tp_vars->rto));
480}
481
482/**
483 * batadv_tp_sender_timeout - timer that fires in case of packet loss
484 * @arg: address of the related tp_vars
485 *
486 * If fired it means that there was packet loss.
487 * Switch to Slow Start, set the ss_threshold to half of the current cwnd and
488 * reset the cwnd to 3*MSS
489 */
490static void batadv_tp_sender_timeout(unsigned long arg)
491{
492 struct batadv_tp_vars *tp_vars = (struct batadv_tp_vars *)arg;
493 struct batadv_priv *bat_priv = tp_vars->bat_priv;
494
495 if (atomic_read(&tp_vars->sending) == 0)
496 return;
497
498 /* if the user waited long enough...shutdown the test */
499 if (unlikely(tp_vars->rto >= BATADV_TP_MAX_RTO)) {
500 batadv_tp_sender_shutdown(tp_vars,
501 BATADV_TP_REASON_DST_UNREACHABLE);
502 return;
503 }
504
505 /* RTO exponential backoff
506 * Details in Section 5.5 of RFC6298
507 */
508 tp_vars->rto <<= 1;
509
510 spin_lock_bh(&tp_vars->cwnd_lock);
511
512 tp_vars->ss_threshold = tp_vars->cwnd >> 1;
513 if (tp_vars->ss_threshold < BATADV_TP_PLEN * 2)
514 tp_vars->ss_threshold = BATADV_TP_PLEN * 2;
515
516 batadv_dbg(BATADV_DBG_TP_METER, bat_priv,
517 "Meter: RTO fired during test towards %pM! cwnd=%u new ss_thr=%u, resetting last_sent to %u\n",
518 tp_vars->other_end, tp_vars->cwnd, tp_vars->ss_threshold,
519 atomic_read(&tp_vars->last_acked));
520
521 tp_vars->cwnd = BATADV_TP_PLEN * 3;
522
523 spin_unlock_bh(&tp_vars->cwnd_lock);
524
525 /* resend the non-ACKed packets.. */
526 tp_vars->last_sent = atomic_read(&tp_vars->last_acked);
527 wake_up(&tp_vars->more_bytes);
528
529 batadv_tp_reset_sender_timer(tp_vars);
530}
531
532/**
533 * batadv_tp_fill_prerandom - Fill buffer with prefetched random bytes
534 * @tp_vars: the private TP meter data for this session
535 * @buf: Buffer to fill with bytes
536 * @nbytes: amount of pseudorandom bytes
537 */
538static void batadv_tp_fill_prerandom(struct batadv_tp_vars *tp_vars,
539 u8 *buf, size_t nbytes)
540{
541 u32 local_offset;
542 size_t bytes_inbuf;
543 size_t to_copy;
544 size_t pos = 0;
545
546 spin_lock_bh(&tp_vars->prerandom_lock);
547 local_offset = tp_vars->prerandom_offset;
548 tp_vars->prerandom_offset += nbytes;
549 tp_vars->prerandom_offset %= sizeof(batadv_tp_prerandom);
550 spin_unlock_bh(&tp_vars->prerandom_lock);
551
552 while (nbytes) {
553 local_offset %= sizeof(batadv_tp_prerandom);
554 bytes_inbuf = sizeof(batadv_tp_prerandom) - local_offset;
555 to_copy = min(nbytes, bytes_inbuf);
556
557 memcpy(&buf[pos], &batadv_tp_prerandom[local_offset], to_copy);
558 pos += to_copy;
559 nbytes -= to_copy;
560 local_offset = 0;
561 }
562}
563
564/**
565 * batadv_tp_send_msg - send a single message
566 * @tp_vars: the private TP meter data for this session
567 * @src: source mac address
568 * @orig_node: the originator of the destination
569 * @seqno: sequence number of this packet
570 * @len: length of the entire packet
571 * @session: session identifier
572 * @uid: local ICMP "socket" index
573 * @timestamp: timestamp in jiffies which is replied in ack
574 *
575 * Create and send a single TP Meter message.
576 *
577 * Return: 0 on success, BATADV_TP_REASON_DST_UNREACHABLE if the destination is
578 * not reachable, BATADV_TP_REASON_MEMORY_ERROR if the packet couldn't be
579 * allocated
580 */
581static int batadv_tp_send_msg(struct batadv_tp_vars *tp_vars, const u8 *src,
582 struct batadv_orig_node *orig_node,
583 u32 seqno, size_t len, const u8 *session,
584 int uid, u32 timestamp)
585{
586 struct batadv_icmp_tp_packet *icmp;
587 struct sk_buff *skb;
588 int r;
589 u8 *data;
590 size_t data_len;
591
592 skb = netdev_alloc_skb_ip_align(NULL, len + ETH_HLEN);
593 if (unlikely(!skb))
594 return BATADV_TP_REASON_MEMORY_ERROR;
595
596 skb_reserve(skb, ETH_HLEN);
597 icmp = (struct batadv_icmp_tp_packet *)skb_put(skb, sizeof(*icmp));
598
599 /* fill the icmp header */
600 ether_addr_copy(icmp->dst, orig_node->orig);
601 ether_addr_copy(icmp->orig, src);
602 icmp->version = BATADV_COMPAT_VERSION;
603 icmp->packet_type = BATADV_ICMP;
604 icmp->ttl = BATADV_TTL;
605 icmp->msg_type = BATADV_TP;
606 icmp->uid = uid;
607
608 icmp->subtype = BATADV_TP_MSG;
609 memcpy(icmp->session, session, sizeof(icmp->session));
610 icmp->seqno = htonl(seqno);
611 icmp->timestamp = htonl(timestamp);
612
613 data_len = len - sizeof(*icmp);
614 data = (u8 *)skb_put(skb, data_len);
615 batadv_tp_fill_prerandom(tp_vars, data, data_len);
616
617 r = batadv_send_skb_to_orig(skb, orig_node, NULL);
618 if (r == -1)
619 kfree_skb(skb);
620
621 if (r == NET_XMIT_SUCCESS)
622 return 0;
623
624 return BATADV_TP_REASON_CANT_SEND;
625}
626
627/**
628 * batadv_tp_recv_ack - ACK receiving function
629 * @bat_priv: the bat priv with all the soft interface information
630 * @skb: the buffer containing the received packet
631 *
632 * Process a received TP ACK packet
633 */
634static void batadv_tp_recv_ack(struct batadv_priv *bat_priv,
635 const struct sk_buff *skb)
636{
637 struct batadv_hard_iface *primary_if = NULL;
638 struct batadv_orig_node *orig_node = NULL;
639 const struct batadv_icmp_tp_packet *icmp;
640 struct batadv_tp_vars *tp_vars;
641 size_t packet_len, mss;
642 u32 rtt, recv_ack, cwnd;
643 unsigned char *dev_addr;
644
645 packet_len = BATADV_TP_PLEN;
646 mss = BATADV_TP_PLEN;
647 packet_len += sizeof(struct batadv_unicast_packet);
648
649 icmp = (struct batadv_icmp_tp_packet *)skb->data;
650
651 /* find the tp_vars */
652 tp_vars = batadv_tp_list_find_session(bat_priv, icmp->orig,
653 icmp->session);
654 if (unlikely(!tp_vars))
655 return;
656
657 if (unlikely(atomic_read(&tp_vars->sending) == 0))
658 goto out;
659
660 /* old ACK? silently drop it.. */
661 if (batadv_seq_before(ntohl(icmp->seqno),
662 (u32)atomic_read(&tp_vars->last_acked)))
663 goto out;
664
665 primary_if = batadv_primary_if_get_selected(bat_priv);
666 if (unlikely(!primary_if))
667 goto out;
668
669 orig_node = batadv_orig_hash_find(bat_priv, icmp->orig);
670 if (unlikely(!orig_node))
671 goto out;
672
673 /* update RTO with the new sampled RTT, if any */
674 rtt = jiffies_to_msecs(jiffies) - ntohl(icmp->timestamp);
675 if (icmp->timestamp && rtt)
676 batadv_tp_update_rto(tp_vars, rtt);
677
678 /* ACK for new data... reset the timer */
679 batadv_tp_reset_sender_timer(tp_vars);
680
681 recv_ack = ntohl(icmp->seqno);
682
683 /* check if this ACK is a duplicate */
684 if (atomic_read(&tp_vars->last_acked) == recv_ack) {
685 atomic_inc(&tp_vars->dup_acks);
686 if (atomic_read(&tp_vars->dup_acks) != 3)
687 goto out;
688
689 if (recv_ack >= tp_vars->recover)
690 goto out;
691
692 /* if this is the third duplicate ACK do Fast Retransmit */
693 batadv_tp_send_msg(tp_vars, primary_if->net_dev->dev_addr,
694 orig_node, recv_ack, packet_len,
695 icmp->session, icmp->uid,
696 jiffies_to_msecs(jiffies));
697
698 spin_lock_bh(&tp_vars->cwnd_lock);
699
700 /* Fast Recovery */
701 tp_vars->fast_recovery = true;
702 /* Set recover to the last outstanding seqno when Fast Recovery
703 * is entered. RFC6582, Section 3.2, step 1
704 */
705 tp_vars->recover = tp_vars->last_sent;
706 tp_vars->ss_threshold = tp_vars->cwnd >> 1;
707 batadv_dbg(BATADV_DBG_TP_METER, bat_priv,
708 "Meter: Fast Recovery, (cur cwnd=%u) ss_thr=%u last_sent=%u recv_ack=%u\n",
709 tp_vars->cwnd, tp_vars->ss_threshold,
710 tp_vars->last_sent, recv_ack);
711 tp_vars->cwnd = batadv_tp_cwnd(tp_vars->ss_threshold, 3 * mss,
712 mss);
713 tp_vars->dec_cwnd = 0;
714 tp_vars->last_sent = recv_ack;
715
716 spin_unlock_bh(&tp_vars->cwnd_lock);
717 } else {
718 /* count the acked data */
719 atomic64_add(recv_ack - atomic_read(&tp_vars->last_acked),
720 &tp_vars->tot_sent);
721 /* reset the duplicate ACKs counter */
722 atomic_set(&tp_vars->dup_acks, 0);
723
724 if (tp_vars->fast_recovery) {
725 /* partial ACK */
726 if (batadv_seq_before(recv_ack, tp_vars->recover)) {
727 /* this is another hole in the window. React
728 * immediately as specified by NewReno (see
729 * Section 3.2 of RFC6582 for details)
730 */
731 dev_addr = primary_if->net_dev->dev_addr;
732 batadv_tp_send_msg(tp_vars, dev_addr,
733 orig_node, recv_ack,
734 packet_len, icmp->session,
735 icmp->uid,
736 jiffies_to_msecs(jiffies));
737 tp_vars->cwnd = batadv_tp_cwnd(tp_vars->cwnd,
738 mss, mss);
739 } else {
740 tp_vars->fast_recovery = false;
741 /* set cwnd to the value of ss_threshold at the
742 * moment that Fast Recovery was entered.
743 * RFC6582, Section 3.2, step 3
744 */
745 cwnd = batadv_tp_cwnd(tp_vars->ss_threshold, 0,
746 mss);
747 tp_vars->cwnd = cwnd;
748 }
749 goto move_twnd;
750 }
751
752 if (recv_ack - atomic_read(&tp_vars->last_acked) >= mss)
753 batadv_tp_update_cwnd(tp_vars, mss);
754move_twnd:
755 /* move the Transmit Window */
756 atomic_set(&tp_vars->last_acked, recv_ack);
757 }
758
759 wake_up(&tp_vars->more_bytes);
760out:
761 if (likely(primary_if))
762 batadv_hardif_put(primary_if);
763 if (likely(orig_node))
764 batadv_orig_node_put(orig_node);
765 if (likely(tp_vars))
766 batadv_tp_vars_put(tp_vars);
767}
768
769/**
770 * batadv_tp_avail - check if congestion window is not full
771 * @tp_vars: the private data of the current TP meter session
772 * @payload_len: size of the payload of a single message
773 *
774 * Return: true when congestion window is not full, false otherwise
775 */
776static bool batadv_tp_avail(struct batadv_tp_vars *tp_vars,
777 size_t payload_len)
778{
779 u32 win_left, win_limit;
780
781 win_limit = atomic_read(&tp_vars->last_acked) + tp_vars->cwnd;
782 win_left = win_limit - tp_vars->last_sent;
783
784 return win_left >= payload_len;
785}
786
787/**
788 * batadv_tp_wait_available - wait until congestion window becomes free or
789 * timeout is reached
790 * @tp_vars: the private data of the current TP meter session
791 * @plen: size of the payload of a single message
792 *
793 * Return: 0 if the condition evaluated to false after the timeout elapsed,
794 * 1 if the condition evaluated to true after the timeout elapsed, the
795 * remaining jiffies (at least 1) if the condition evaluated to true before
796 * the timeout elapsed, or -ERESTARTSYS if it was interrupted by a signal.
797 */
798static int batadv_tp_wait_available(struct batadv_tp_vars *tp_vars, size_t plen)
799{
800 int ret;
801
802 ret = wait_event_interruptible_timeout(tp_vars->more_bytes,
803 batadv_tp_avail(tp_vars, plen),
804 HZ / 10);
805
806 return ret;
807}
808
809/**
810 * batadv_tp_send - main sending thread of a tp meter session
811 * @arg: address of the related tp_vars
812 *
813 * Return: nothing, this function never returns
814 */
815static int batadv_tp_send(void *arg)
816{
817 struct batadv_tp_vars *tp_vars = arg;
818 struct batadv_priv *bat_priv = tp_vars->bat_priv;
819 struct batadv_hard_iface *primary_if = NULL;
820 struct batadv_orig_node *orig_node = NULL;
821 size_t payload_len, packet_len;
822 int err = 0;
823
824 if (unlikely(tp_vars->role != BATADV_TP_SENDER)) {
825 err = BATADV_TP_REASON_DST_UNREACHABLE;
826 tp_vars->reason = err;
827 goto out;
828 }
829
830 orig_node = batadv_orig_hash_find(bat_priv, tp_vars->other_end);
831 if (unlikely(!orig_node)) {
832 err = BATADV_TP_REASON_DST_UNREACHABLE;
833 tp_vars->reason = err;
834 goto out;
835 }
836
837 primary_if = batadv_primary_if_get_selected(bat_priv);
838 if (unlikely(!primary_if)) {
839 err = BATADV_TP_REASON_DST_UNREACHABLE;
840 goto out;
841 }
842
843 /* assume that all the hard_interfaces have a correctly
844 * configured MTU, so use the soft_iface MTU as MSS.
845 * This might not be true and in that case the fragmentation
846 * should be used.
847 * Now, try to send the packet as it is
848 */
849 payload_len = BATADV_TP_PLEN;
850 BUILD_BUG_ON(sizeof(struct batadv_icmp_tp_packet) > BATADV_TP_PLEN);
851
852 batadv_tp_reset_sender_timer(tp_vars);
853
854 /* queue the worker in charge of terminating the test */
855 queue_delayed_work(batadv_event_workqueue, &tp_vars->finish_work,
856 msecs_to_jiffies(tp_vars->test_length));
857
858 while (atomic_read(&tp_vars->sending) != 0) {
859 if (unlikely(!batadv_tp_avail(tp_vars, payload_len))) {
860 batadv_tp_wait_available(tp_vars, payload_len);
861 continue;
862 }
863
864 /* to emulate normal unicast traffic, add to the payload len
865 * the size of the unicast header
866 */
867 packet_len = payload_len + sizeof(struct batadv_unicast_packet);
868
869 err = batadv_tp_send_msg(tp_vars, primary_if->net_dev->dev_addr,
870 orig_node, tp_vars->last_sent,
871 packet_len,
872 tp_vars->session, tp_vars->icmp_uid,
873 jiffies_to_msecs(jiffies));
874
875 /* something went wrong during the preparation/transmission */
876 if (unlikely(err && err != BATADV_TP_REASON_CANT_SEND)) {
877 batadv_dbg(BATADV_DBG_TP_METER, bat_priv,
878 "Meter: batadv_tp_send() cannot send packets (%d)\n",
879 err);
880 /* ensure nobody else tries to stop the thread now */
881 if (atomic_dec_and_test(&tp_vars->sending))
882 tp_vars->reason = err;
883 break;
884 }
885
886 /* right-shift the TWND */
887 if (!err)
888 tp_vars->last_sent += payload_len;
889
890 cond_resched();
891 }
892
893out:
894 if (likely(primary_if))
895 batadv_hardif_put(primary_if);
896 if (likely(orig_node))
897 batadv_orig_node_put(orig_node);
898
899 batadv_tp_sender_end(bat_priv, tp_vars);
900 batadv_tp_sender_cleanup(bat_priv, tp_vars);
901
902 batadv_tp_vars_put(tp_vars);
903
904 do_exit(0);
905}
906
907/**
908 * batadv_tp_start_kthread - start new thread which manages the tp meter sender
909 * @tp_vars: the private data of the current TP meter session
910 */
911static void batadv_tp_start_kthread(struct batadv_tp_vars *tp_vars)
912{
913 struct task_struct *kthread;
914 struct batadv_priv *bat_priv = tp_vars->bat_priv;
915 u32 session_cookie;
916
917 kref_get(&tp_vars->refcount);
918 kthread = kthread_create(batadv_tp_send, tp_vars, "kbatadv_tp_meter");
919 if (IS_ERR(kthread)) {
920 session_cookie = batadv_tp_session_cookie(tp_vars->session,
921 tp_vars->icmp_uid);
922 pr_err("batadv: cannot create tp meter kthread\n");
923 batadv_tp_batctl_error_notify(BATADV_TP_REASON_MEMORY_ERROR,
924 tp_vars->other_end,
925 bat_priv, session_cookie);
926
927 /* drop reserved reference for kthread */
928 batadv_tp_vars_put(tp_vars);
929
930 /* cleanup of failed tp meter variables */
931 batadv_tp_sender_cleanup(bat_priv, tp_vars);
932 return;
933 }
934
935 wake_up_process(kthread);
936}
937
938/**
939 * batadv_tp_start - start a new tp meter session
940 * @bat_priv: the bat priv with all the soft interface information
941 * @dst: the receiver MAC address
942 * @test_length: test length in milliseconds
943 * @cookie: session cookie
944 */
945void batadv_tp_start(struct batadv_priv *bat_priv, const u8 *dst,
946 u32 test_length, u32 *cookie)
947{
948 struct batadv_tp_vars *tp_vars;
949 u8 session_id[2];
950 u8 icmp_uid;
951 u32 session_cookie;
952
953 get_random_bytes(session_id, sizeof(session_id));
954 get_random_bytes(&icmp_uid, 1);
955 session_cookie = batadv_tp_session_cookie(session_id, icmp_uid);
956 *cookie = session_cookie;
957
958 /* look for an already existing test towards this node */
959 spin_lock_bh(&bat_priv->tp_list_lock);
960 tp_vars = batadv_tp_list_find(bat_priv, dst);
961 if (tp_vars) {
962 spin_unlock_bh(&bat_priv->tp_list_lock);
963 batadv_tp_vars_put(tp_vars);
964 batadv_dbg(BATADV_DBG_TP_METER, bat_priv,
965 "Meter: test to or from the same node already ongoing, aborting\n");
966 batadv_tp_batctl_error_notify(BATADV_TP_REASON_ALREADY_ONGOING,
967 dst, bat_priv, session_cookie);
968 return;
969 }
970
971 if (!atomic_add_unless(&bat_priv->tp_num, 1, BATADV_TP_MAX_NUM)) {
972 spin_unlock_bh(&bat_priv->tp_list_lock);
973 batadv_dbg(BATADV_DBG_TP_METER, bat_priv,
974 "Meter: too many ongoing sessions, aborting (SEND)\n");
975 batadv_tp_batctl_error_notify(BATADV_TP_REASON_TOO_MANY, dst,
976 bat_priv, session_cookie);
977 return;
978 }
979
980 tp_vars = kmalloc(sizeof(*tp_vars), GFP_ATOMIC);
981 if (!tp_vars) {
982 spin_unlock_bh(&bat_priv->tp_list_lock);
983 batadv_dbg(BATADV_DBG_TP_METER, bat_priv,
984 "Meter: batadv_tp_start cannot allocate list elements\n");
985 batadv_tp_batctl_error_notify(BATADV_TP_REASON_MEMORY_ERROR,
986 dst, bat_priv, session_cookie);
987 return;
988 }
989
990 /* initialize tp_vars */
991 ether_addr_copy(tp_vars->other_end, dst);
992 kref_init(&tp_vars->refcount);
993 tp_vars->role = BATADV_TP_SENDER;
994 atomic_set(&tp_vars->sending, 1);
995 memcpy(tp_vars->session, session_id, sizeof(session_id));
996 tp_vars->icmp_uid = icmp_uid;
997
998 tp_vars->last_sent = BATADV_TP_FIRST_SEQ;
999 atomic_set(&tp_vars->last_acked, BATADV_TP_FIRST_SEQ);
1000 tp_vars->fast_recovery = false;
1001 tp_vars->recover = BATADV_TP_FIRST_SEQ;
1002
1003 /* initialise the CWND to 3*MSS (Section 3.1 in RFC5681).
1004 * For batman-adv the MSS is the size of the payload received by the
1005 * soft_interface, hence its MTU
1006 */
1007 tp_vars->cwnd = BATADV_TP_PLEN * 3;
1008 /* at the beginning initialise the SS threshold to the biggest possible
1009 * window size, hence the AWND size
1010 */
1011 tp_vars->ss_threshold = BATADV_TP_AWND;
1012
1013 /* RTO initial value is 3 seconds.
1014 * Details in Section 2.1 of RFC6298
1015 */
1016 tp_vars->rto = 1000;
1017 tp_vars->srtt = 0;
1018 tp_vars->rttvar = 0;
1019
1020 atomic64_set(&tp_vars->tot_sent, 0);
1021
1022 kref_get(&tp_vars->refcount);
1023 setup_timer(&tp_vars->timer, batadv_tp_sender_timeout,
1024 (unsigned long)tp_vars);
1025
1026 tp_vars->bat_priv = bat_priv;
1027 tp_vars->start_time = jiffies;
1028
1029 init_waitqueue_head(&tp_vars->more_bytes);
1030
1031 spin_lock_init(&tp_vars->unacked_lock);
1032 INIT_LIST_HEAD(&tp_vars->unacked_list);
1033
1034 spin_lock_init(&tp_vars->cwnd_lock);
1035
1036 tp_vars->prerandom_offset = 0;
1037 spin_lock_init(&tp_vars->prerandom_lock);
1038
1039 kref_get(&tp_vars->refcount);
1040 hlist_add_head_rcu(&tp_vars->list, &bat_priv->tp_list);
1041 spin_unlock_bh(&bat_priv->tp_list_lock);
1042
1043 tp_vars->test_length = test_length;
1044 if (!tp_vars->test_length)
1045 tp_vars->test_length = BATADV_TP_DEF_TEST_LENGTH;
1046
1047 batadv_dbg(BATADV_DBG_TP_METER, bat_priv,
1048 "Meter: starting throughput meter towards %pM (length=%ums)\n",
1049 dst, test_length);
1050
1051 /* init work item for finished tp tests */
1052 INIT_DELAYED_WORK(&tp_vars->finish_work, batadv_tp_sender_finish);
1053
1054 /* start tp kthread. This way the write() call issued from userspace can
1055 * happily return and avoid to block
1056 */
1057 batadv_tp_start_kthread(tp_vars);
1058
1059 /* don't return reference to new tp_vars */
1060 batadv_tp_vars_put(tp_vars);
1061}
1062
1063/**
1064 * batadv_tp_stop - stop currently running tp meter session
1065 * @bat_priv: the bat priv with all the soft interface information
1066 * @dst: the receiver MAC address
1067 * @return_value: reason for tp meter session stop
1068 */
1069void batadv_tp_stop(struct batadv_priv *bat_priv, const u8 *dst,
1070 u8 return_value)
1071{
1072 struct batadv_orig_node *orig_node;
1073 struct batadv_tp_vars *tp_vars;
1074
1075 batadv_dbg(BATADV_DBG_TP_METER, bat_priv,
1076 "Meter: stopping test towards %pM\n", dst);
1077
1078 orig_node = batadv_orig_hash_find(bat_priv, dst);
1079 if (!orig_node)
1080 return;
1081
1082 tp_vars = batadv_tp_list_find(bat_priv, orig_node->orig);
1083 if (!tp_vars) {
1084 batadv_dbg(BATADV_DBG_TP_METER, bat_priv,
1085 "Meter: trying to interrupt an already over connection\n");
1086 goto out;
1087 }
1088
1089 batadv_tp_sender_shutdown(tp_vars, return_value);
1090 batadv_tp_vars_put(tp_vars);
1091out:
1092 batadv_orig_node_put(orig_node);
1093}
1094
1095/**
1096 * batadv_tp_reset_receiver_timer - reset the receiver shutdown timer
1097 * @tp_vars: the private data of the current TP meter session
1098 *
1099 * start the receiver shutdown timer or reset it if already started
1100 */
1101static void batadv_tp_reset_receiver_timer(struct batadv_tp_vars *tp_vars)
1102{
1103 mod_timer(&tp_vars->timer,
1104 jiffies + msecs_to_jiffies(BATADV_TP_RECV_TIMEOUT));
1105}
1106
1107/**
1108 * batadv_tp_receiver_shutdown - stop a tp meter receiver when timeout is
1109 * reached without received ack
1110 * @arg: address of the related tp_vars
1111 */
1112static void batadv_tp_receiver_shutdown(unsigned long arg)
1113{
1114 struct batadv_tp_vars *tp_vars = (struct batadv_tp_vars *)arg;
1115 struct batadv_tp_unacked *un, *safe;
1116 struct batadv_priv *bat_priv;
1117
1118 bat_priv = tp_vars->bat_priv;
1119
1120 /* if there is recent activity rearm the timer */
1121 if (!batadv_has_timed_out(tp_vars->last_recv_time,
1122 BATADV_TP_RECV_TIMEOUT)) {
1123 /* reset the receiver shutdown timer */
1124 batadv_tp_reset_receiver_timer(tp_vars);
1125 return;
1126 }
1127
1128 batadv_dbg(BATADV_DBG_TP_METER, bat_priv,
1129 "Shutting down for inactivity (more than %dms) from %pM\n",
1130 BATADV_TP_RECV_TIMEOUT, tp_vars->other_end);
1131
1132 spin_lock_bh(&tp_vars->bat_priv->tp_list_lock);
1133 hlist_del_rcu(&tp_vars->list);
1134 spin_unlock_bh(&tp_vars->bat_priv->tp_list_lock);
1135
1136 /* drop list reference */
1137 batadv_tp_vars_put(tp_vars);
1138
1139 atomic_dec(&bat_priv->tp_num);
1140
1141 spin_lock_bh(&tp_vars->unacked_lock);
1142 list_for_each_entry_safe(un, safe, &tp_vars->unacked_list, list) {
1143 list_del(&un->list);
1144 kfree(un);
1145 }
1146 spin_unlock_bh(&tp_vars->unacked_lock);
1147
1148 /* drop reference of timer */
1149 batadv_tp_vars_put(tp_vars);
1150}
1151
1152/**
1153 * batadv_tp_send_ack - send an ACK packet
1154 * @bat_priv: the bat priv with all the soft interface information
1155 * @dst: the mac address of the destination originator
1156 * @seq: the sequence number to ACK
1157 * @timestamp: the timestamp to echo back in the ACK
1158 * @session: session identifier
1159 * @socket_index: local ICMP socket identifier
1160 *
1161 * Return: 0 on success, a positive integer representing the reason of the
1162 * failure otherwise
1163 */
1164static int batadv_tp_send_ack(struct batadv_priv *bat_priv, const u8 *dst,
1165 u32 seq, __be32 timestamp, const u8 *session,
1166 int socket_index)
1167{
1168 struct batadv_hard_iface *primary_if = NULL;
1169 struct batadv_orig_node *orig_node;
1170 struct batadv_icmp_tp_packet *icmp;
1171 struct sk_buff *skb;
1172 int r, ret;
1173
1174 orig_node = batadv_orig_hash_find(bat_priv, dst);
1175 if (unlikely(!orig_node)) {
1176 ret = BATADV_TP_REASON_DST_UNREACHABLE;
1177 goto out;
1178 }
1179
1180 primary_if = batadv_primary_if_get_selected(bat_priv);
1181 if (unlikely(!primary_if)) {
1182 ret = BATADV_TP_REASON_DST_UNREACHABLE;
1183 goto out;
1184 }
1185
1186 skb = netdev_alloc_skb_ip_align(NULL, sizeof(*icmp) + ETH_HLEN);
1187 if (unlikely(!skb)) {
1188 ret = BATADV_TP_REASON_MEMORY_ERROR;
1189 goto out;
1190 }
1191
1192 skb_reserve(skb, ETH_HLEN);
1193 icmp = (struct batadv_icmp_tp_packet *)skb_put(skb, sizeof(*icmp));
1194 icmp->packet_type = BATADV_ICMP;
1195 icmp->version = BATADV_COMPAT_VERSION;
1196 icmp->ttl = BATADV_TTL;
1197 icmp->msg_type = BATADV_TP;
1198 ether_addr_copy(icmp->dst, orig_node->orig);
1199 ether_addr_copy(icmp->orig, primary_if->net_dev->dev_addr);
1200 icmp->uid = socket_index;
1201
1202 icmp->subtype = BATADV_TP_ACK;
1203 memcpy(icmp->session, session, sizeof(icmp->session));
1204 icmp->seqno = htonl(seq);
1205 icmp->timestamp = timestamp;
1206
1207 /* send the ack */
1208 r = batadv_send_skb_to_orig(skb, orig_node, NULL);
1209 if (r == -1)
1210 kfree_skb(skb);
1211
1212 if (unlikely(r < 0) || (r == NET_XMIT_DROP)) {
1213 ret = BATADV_TP_REASON_DST_UNREACHABLE;
1214 goto out;
1215 }
1216 ret = 0;
1217
1218out:
1219 if (likely(orig_node))
1220 batadv_orig_node_put(orig_node);
1221 if (likely(primary_if))
1222 batadv_hardif_put(primary_if);
1223
1224 return ret;
1225}
1226
1227/**
1228 * batadv_tp_handle_out_of_order - store an out of order packet
1229 * @tp_vars: the private data of the current TP meter session
1230 * @skb: the buffer containing the received packet
1231 *
1232 * Store the out of order packet in the unacked list for late processing. This
1233 * packets are kept in this list so that they can be ACKed at once as soon as
1234 * all the previous packets have been received
1235 *
1236 * Return: true if the packed has been successfully processed, false otherwise
1237 */
1238static bool batadv_tp_handle_out_of_order(struct batadv_tp_vars *tp_vars,
1239 const struct sk_buff *skb)
1240{
1241 const struct batadv_icmp_tp_packet *icmp;
1242 struct batadv_tp_unacked *un, *new;
1243 u32 payload_len;
1244 bool added = false;
1245
1246 new = kmalloc(sizeof(*new), GFP_ATOMIC);
1247 if (unlikely(!new))
1248 return false;
1249
1250 icmp = (struct batadv_icmp_tp_packet *)skb->data;
1251
1252 new->seqno = ntohl(icmp->seqno);
1253 payload_len = skb->len - sizeof(struct batadv_unicast_packet);
1254 new->len = payload_len;
1255
1256 spin_lock_bh(&tp_vars->unacked_lock);
1257 /* if the list is empty immediately attach this new object */
1258 if (list_empty(&tp_vars->unacked_list)) {
1259 list_add(&new->list, &tp_vars->unacked_list);
1260 goto out;
1261 }
1262
1263 /* otherwise loop over the list and either drop the packet because this
1264 * is a duplicate or store it at the right position.
1265 *
1266 * The iteration is done in the reverse way because it is likely that
1267 * the last received packet (the one being processed now) has a bigger
1268 * seqno than all the others already stored.
1269 */
1270 list_for_each_entry_reverse(un, &tp_vars->unacked_list, list) {
1271 /* check for duplicates */
1272 if (new->seqno == un->seqno) {
1273 if (new->len > un->len)
1274 un->len = new->len;
1275 kfree(new);
1276 added = true;
1277 break;
1278 }
1279
1280 /* look for the right position */
1281 if (batadv_seq_before(new->seqno, un->seqno))
1282 continue;
1283
1284 /* as soon as an entry having a bigger seqno is found, the new
1285 * one is attached _after_ it. In this way the list is kept in
1286 * ascending order
1287 */
1288 list_add_tail(&new->list, &un->list);
1289 added = true;
1290 break;
1291 }
1292
1293 /* received packet with smallest seqno out of order; add it to front */
1294 if (!added)
1295 list_add(&new->list, &tp_vars->unacked_list);
1296
1297out:
1298 spin_unlock_bh(&tp_vars->unacked_lock);
1299
1300 return true;
1301}
1302
1303/**
1304 * batadv_tp_ack_unordered - update number received bytes in current stream
1305 * without gaps
1306 * @tp_vars: the private data of the current TP meter session
1307 */
1308static void batadv_tp_ack_unordered(struct batadv_tp_vars *tp_vars)
1309{
1310 struct batadv_tp_unacked *un, *safe;
1311 u32 to_ack;
1312
1313 /* go through the unacked packet list and possibly ACK them as
1314 * well
1315 */
1316 spin_lock_bh(&tp_vars->unacked_lock);
1317 list_for_each_entry_safe(un, safe, &tp_vars->unacked_list, list) {
1318 /* the list is ordered, therefore it is possible to stop as soon
1319 * there is a gap between the last acked seqno and the seqno of
1320 * the packet under inspection
1321 */
1322 if (batadv_seq_before(tp_vars->last_recv, un->seqno))
1323 break;
1324
1325 to_ack = un->seqno + un->len - tp_vars->last_recv;
1326
1327 if (batadv_seq_before(tp_vars->last_recv, un->seqno + un->len))
1328 tp_vars->last_recv += to_ack;
1329
1330 list_del(&un->list);
1331 kfree(un);
1332 }
1333 spin_unlock_bh(&tp_vars->unacked_lock);
1334}
1335
1336/**
1337 * batadv_tp_init_recv - return matching or create new receiver tp_vars
1338 * @bat_priv: the bat priv with all the soft interface information
1339 * @icmp: received icmp tp msg
1340 *
1341 * Return: corresponding tp_vars or NULL on errors
1342 */
1343static struct batadv_tp_vars *
1344batadv_tp_init_recv(struct batadv_priv *bat_priv,
1345 const struct batadv_icmp_tp_packet *icmp)
1346{
1347 struct batadv_tp_vars *tp_vars;
1348
1349 spin_lock_bh(&bat_priv->tp_list_lock);
1350 tp_vars = batadv_tp_list_find_session(bat_priv, icmp->orig,
1351 icmp->session);
1352 if (tp_vars)
1353 goto out_unlock;
1354
1355 if (!atomic_add_unless(&bat_priv->tp_num, 1, BATADV_TP_MAX_NUM)) {
1356 batadv_dbg(BATADV_DBG_TP_METER, bat_priv,
1357 "Meter: too many ongoing sessions, aborting (RECV)\n");
1358 goto out_unlock;
1359 }
1360
1361 tp_vars = kmalloc(sizeof(*tp_vars), GFP_ATOMIC);
1362 if (!tp_vars)
1363 goto out_unlock;
1364
1365 ether_addr_copy(tp_vars->other_end, icmp->orig);
1366 tp_vars->role = BATADV_TP_RECEIVER;
1367 memcpy(tp_vars->session, icmp->session, sizeof(tp_vars->session));
1368 tp_vars->last_recv = BATADV_TP_FIRST_SEQ;
1369 tp_vars->bat_priv = bat_priv;
1370 kref_init(&tp_vars->refcount);
1371
1372 spin_lock_init(&tp_vars->unacked_lock);
1373 INIT_LIST_HEAD(&tp_vars->unacked_list);
1374
1375 kref_get(&tp_vars->refcount);
1376 hlist_add_head_rcu(&tp_vars->list, &bat_priv->tp_list);
1377
1378 kref_get(&tp_vars->refcount);
1379 setup_timer(&tp_vars->timer, batadv_tp_receiver_shutdown,
1380 (unsigned long)tp_vars);
1381
1382 batadv_tp_reset_receiver_timer(tp_vars);
1383
1384out_unlock:
1385 spin_unlock_bh(&bat_priv->tp_list_lock);
1386
1387 return tp_vars;
1388}
1389
1390/**
1391 * batadv_tp_recv_msg - process a single data message
1392 * @bat_priv: the bat priv with all the soft interface information
1393 * @skb: the buffer containing the received packet
1394 *
1395 * Process a received TP MSG packet
1396 */
1397static void batadv_tp_recv_msg(struct batadv_priv *bat_priv,
1398 const struct sk_buff *skb)
1399{
1400 const struct batadv_icmp_tp_packet *icmp;
1401 struct batadv_tp_vars *tp_vars;
1402 size_t packet_size;
1403 u32 seqno;
1404
1405 icmp = (struct batadv_icmp_tp_packet *)skb->data;
1406
1407 seqno = ntohl(icmp->seqno);
1408 /* check if this is the first seqno. This means that if the
1409 * first packet is lost, the tp meter does not work anymore!
1410 */
1411 if (seqno == BATADV_TP_FIRST_SEQ) {
1412 tp_vars = batadv_tp_init_recv(bat_priv, icmp);
1413 if (!tp_vars) {
1414 batadv_dbg(BATADV_DBG_TP_METER, bat_priv,
1415 "Meter: seqno != BATADV_TP_FIRST_SEQ cannot initiate connection\n");
1416 goto out;
1417 }
1418 } else {
1419 tp_vars = batadv_tp_list_find_session(bat_priv, icmp->orig,
1420 icmp->session);
1421 if (!tp_vars) {
1422 batadv_dbg(BATADV_DBG_TP_METER, bat_priv,
1423 "Unexpected packet from %pM!\n",
1424 icmp->orig);
1425 goto out;
1426 }
1427 }
1428
1429 if (unlikely(tp_vars->role != BATADV_TP_RECEIVER)) {
1430 batadv_dbg(BATADV_DBG_TP_METER, bat_priv,
1431 "Meter: dropping packet: not expected (role=%u)\n",
1432 tp_vars->role);
1433 goto out;
1434 }
1435
1436 tp_vars->last_recv_time = jiffies;
1437
1438 /* if the packet is a duplicate, it may be the case that an ACK has been
1439 * lost. Resend the ACK
1440 */
1441 if (batadv_seq_before(seqno, tp_vars->last_recv))
1442 goto send_ack;
1443
1444 /* if the packet is out of order enqueue it */
1445 if (ntohl(icmp->seqno) != tp_vars->last_recv) {
1446 /* exit immediately (and do not send any ACK) if the packet has
1447 * not been enqueued correctly
1448 */
1449 if (!batadv_tp_handle_out_of_order(tp_vars, skb))
1450 goto out;
1451
1452 /* send a duplicate ACK */
1453 goto send_ack;
1454 }
1455
1456 /* if everything was fine count the ACKed bytes */
1457 packet_size = skb->len - sizeof(struct batadv_unicast_packet);
1458 tp_vars->last_recv += packet_size;
1459
1460 /* check if this ordered message filled a gap.... */
1461 batadv_tp_ack_unordered(tp_vars);
1462
1463send_ack:
1464 /* send the ACK. If the received packet was out of order, the ACK that
1465 * is going to be sent is a duplicate (the sender will count them and
1466 * possibly enter Fast Retransmit as soon as it has reached 3)
1467 */
1468 batadv_tp_send_ack(bat_priv, icmp->orig, tp_vars->last_recv,
1469 icmp->timestamp, icmp->session, icmp->uid);
1470out:
1471 if (likely(tp_vars))
1472 batadv_tp_vars_put(tp_vars);
1473}
1474
1475/**
1476 * batadv_tp_meter_recv - main TP Meter receiving function
1477 * @bat_priv: the bat priv with all the soft interface information
1478 * @skb: the buffer containing the received packet
1479 */
1480void batadv_tp_meter_recv(struct batadv_priv *bat_priv, struct sk_buff *skb)
1481{
1482 struct batadv_icmp_tp_packet *icmp;
1483
1484 icmp = (struct batadv_icmp_tp_packet *)skb->data;
1485
1486 switch (icmp->subtype) {
1487 case BATADV_TP_MSG:
1488 batadv_tp_recv_msg(bat_priv, skb);
1489 break;
1490 case BATADV_TP_ACK:
1491 batadv_tp_recv_ack(bat_priv, skb);
1492 break;
1493 default:
1494 batadv_dbg(BATADV_DBG_TP_METER, bat_priv,
1495 "Received unknown TP Metric packet type %u\n",
1496 icmp->subtype);
1497 }
1498 consume_skb(skb);
1499}
1500
1501/**
1502 * batadv_tp_meter_init - initialize global tp_meter structures
1503 */
1504void batadv_tp_meter_init(void)
1505{
1506 get_random_bytes(batadv_tp_prerandom, sizeof(batadv_tp_prerandom));
1507}
diff --git a/net/batman-adv/tp_meter.h b/net/batman-adv/tp_meter.h
new file mode 100644
index 000000000000..ba922c425e56
--- /dev/null
+++ b/net/batman-adv/tp_meter.h
@@ -0,0 +1,34 @@
1/* Copyright (C) 2012-2016 B.A.T.M.A.N. contributors:
2 *
3 * Edo Monticelli, Antonio Quartulli
4 *
5 * This program is free software; you can redistribute it and/or
6 * modify it under the terms of version 2 of the GNU General Public
7 * License as published by the Free Software Foundation.
8 *
9 * This program is distributed in the hope that it will be useful, but
10 * WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * General Public License for more details.
13 *
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, see <http://www.gnu.org/licenses/>.
16 */
17
18#ifndef _NET_BATMAN_ADV_TP_METER_H_
19#define _NET_BATMAN_ADV_TP_METER_H_
20
21#include "main.h"
22
23#include <linux/types.h>
24
25struct sk_buff;
26
27void batadv_tp_meter_init(void);
28void batadv_tp_start(struct batadv_priv *bat_priv, const u8 *dst,
29 u32 test_length, u32 *cookie);
30void batadv_tp_stop(struct batadv_priv *bat_priv, const u8 *dst,
31 u8 return_value);
32void batadv_tp_meter_recv(struct batadv_priv *bat_priv, struct sk_buff *skb);
33
34#endif /* _NET_BATMAN_ADV_TP_METER_H_ */
diff --git a/net/batman-adv/translation-table.c b/net/batman-adv/translation-table.c
index 0d441aac1ad5..7e6df7a4964a 100644
--- a/net/batman-adv/translation-table.c
+++ b/net/batman-adv/translation-table.c
@@ -47,10 +47,12 @@
47#include "bridge_loop_avoidance.h" 47#include "bridge_loop_avoidance.h"
48#include "hard-interface.h" 48#include "hard-interface.h"
49#include "hash.h" 49#include "hash.h"
50#include "log.h"
50#include "multicast.h" 51#include "multicast.h"
51#include "originator.h" 52#include "originator.h"
52#include "packet.h" 53#include "packet.h"
53#include "soft-interface.h" 54#include "soft-interface.h"
55#include "tvlv.h"
54 56
55/* hash class keys */ 57/* hash class keys */
56static struct lock_class_key batadv_tt_local_hash_lock_class_key; 58static struct lock_class_key batadv_tt_local_hash_lock_class_key;
@@ -1545,7 +1547,7 @@ batadv_transtable_best_orig(struct batadv_priv *bat_priv,
1545 struct batadv_tt_global_entry *tt_global_entry) 1547 struct batadv_tt_global_entry *tt_global_entry)
1546{ 1548{
1547 struct batadv_neigh_node *router, *best_router = NULL; 1549 struct batadv_neigh_node *router, *best_router = NULL;
1548 struct batadv_algo_ops *bao = bat_priv->bat_algo_ops; 1550 struct batadv_algo_ops *bao = bat_priv->algo_ops;
1549 struct hlist_head *head; 1551 struct hlist_head *head;
1550 struct batadv_tt_orig_list_entry *orig_entry, *best_entry = NULL; 1552 struct batadv_tt_orig_list_entry *orig_entry, *best_entry = NULL;
1551 1553
@@ -1557,8 +1559,8 @@ batadv_transtable_best_orig(struct batadv_priv *bat_priv,
1557 continue; 1559 continue;
1558 1560
1559 if (best_router && 1561 if (best_router &&
1560 bao->bat_neigh_cmp(router, BATADV_IF_DEFAULT, 1562 bao->neigh.cmp(router, BATADV_IF_DEFAULT, best_router,
1561 best_router, BATADV_IF_DEFAULT) <= 0) { 1563 BATADV_IF_DEFAULT) <= 0) {
1562 batadv_neigh_node_put(router); 1564 batadv_neigh_node_put(router);
1563 continue; 1565 continue;
1564 } 1566 }
diff --git a/net/batman-adv/tvlv.c b/net/batman-adv/tvlv.c
new file mode 100644
index 000000000000..3d1cf0fb112d
--- /dev/null
+++ b/net/batman-adv/tvlv.c
@@ -0,0 +1,632 @@
1/* Copyright (C) 2007-2016 B.A.T.M.A.N. contributors:
2 *
3 * Marek Lindner, Simon Wunderlich
4 *
5 * This program is free software; you can redistribute it and/or
6 * modify it under the terms of version 2 of the GNU General Public
7 * License as published by the Free Software Foundation.
8 *
9 * This program is distributed in the hope that it will be useful, but
10 * WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * General Public License for more details.
13 *
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, see <http://www.gnu.org/licenses/>.
16 */
17
18#include "main.h"
19
20#include <linux/byteorder/generic.h>
21#include <linux/etherdevice.h>
22#include <linux/fs.h>
23#include <linux/if_ether.h>
24#include <linux/kernel.h>
25#include <linux/kref.h>
26#include <linux/list.h>
27#include <linux/lockdep.h>
28#include <linux/netdevice.h>
29#include <linux/pkt_sched.h>
30#include <linux/rculist.h>
31#include <linux/rcupdate.h>
32#include <linux/skbuff.h>
33#include <linux/slab.h>
34#include <linux/spinlock.h>
35#include <linux/stddef.h>
36#include <linux/string.h>
37#include <linux/types.h>
38
39#include "originator.h"
40#include "packet.h"
41#include "send.h"
42#include "tvlv.h"
43
44/**
45 * batadv_tvlv_handler_release - release tvlv handler from lists and queue for
46 * free after rcu grace period
47 * @ref: kref pointer of the tvlv
48 */
49static void batadv_tvlv_handler_release(struct kref *ref)
50{
51 struct batadv_tvlv_handler *tvlv_handler;
52
53 tvlv_handler = container_of(ref, struct batadv_tvlv_handler, refcount);
54 kfree_rcu(tvlv_handler, rcu);
55}
56
57/**
58 * batadv_tvlv_handler_put - decrement the tvlv container refcounter and
59 * possibly release it
60 * @tvlv_handler: the tvlv handler to free
61 */
62static void batadv_tvlv_handler_put(struct batadv_tvlv_handler *tvlv_handler)
63{
64 kref_put(&tvlv_handler->refcount, batadv_tvlv_handler_release);
65}
66
67/**
68 * batadv_tvlv_handler_get - retrieve tvlv handler from the tvlv handler list
69 * based on the provided type and version (both need to match)
70 * @bat_priv: the bat priv with all the soft interface information
71 * @type: tvlv handler type to look for
72 * @version: tvlv handler version to look for
73 *
74 * Return: tvlv handler if found or NULL otherwise.
75 */
76static struct batadv_tvlv_handler *
77batadv_tvlv_handler_get(struct batadv_priv *bat_priv, u8 type, u8 version)
78{
79 struct batadv_tvlv_handler *tvlv_handler_tmp, *tvlv_handler = NULL;
80
81 rcu_read_lock();
82 hlist_for_each_entry_rcu(tvlv_handler_tmp,
83 &bat_priv->tvlv.handler_list, list) {
84 if (tvlv_handler_tmp->type != type)
85 continue;
86
87 if (tvlv_handler_tmp->version != version)
88 continue;
89
90 if (!kref_get_unless_zero(&tvlv_handler_tmp->refcount))
91 continue;
92
93 tvlv_handler = tvlv_handler_tmp;
94 break;
95 }
96 rcu_read_unlock();
97
98 return tvlv_handler;
99}
100
101/**
102 * batadv_tvlv_container_release - release tvlv from lists and free
103 * @ref: kref pointer of the tvlv
104 */
105static void batadv_tvlv_container_release(struct kref *ref)
106{
107 struct batadv_tvlv_container *tvlv;
108
109 tvlv = container_of(ref, struct batadv_tvlv_container, refcount);
110 kfree(tvlv);
111}
112
113/**
114 * batadv_tvlv_container_put - decrement the tvlv container refcounter and
115 * possibly release it
116 * @tvlv: the tvlv container to free
117 */
118static void batadv_tvlv_container_put(struct batadv_tvlv_container *tvlv)
119{
120 kref_put(&tvlv->refcount, batadv_tvlv_container_release);
121}
122
123/**
124 * batadv_tvlv_container_get - retrieve tvlv container from the tvlv container
125 * list based on the provided type and version (both need to match)
126 * @bat_priv: the bat priv with all the soft interface information
127 * @type: tvlv container type to look for
128 * @version: tvlv container version to look for
129 *
130 * Has to be called with the appropriate locks being acquired
131 * (tvlv.container_list_lock).
132 *
133 * Return: tvlv container if found or NULL otherwise.
134 */
135static struct batadv_tvlv_container *
136batadv_tvlv_container_get(struct batadv_priv *bat_priv, u8 type, u8 version)
137{
138 struct batadv_tvlv_container *tvlv_tmp, *tvlv = NULL;
139
140 lockdep_assert_held(&bat_priv->tvlv.container_list_lock);
141
142 hlist_for_each_entry(tvlv_tmp, &bat_priv->tvlv.container_list, list) {
143 if (tvlv_tmp->tvlv_hdr.type != type)
144 continue;
145
146 if (tvlv_tmp->tvlv_hdr.version != version)
147 continue;
148
149 kref_get(&tvlv_tmp->refcount);
150 tvlv = tvlv_tmp;
151 break;
152 }
153
154 return tvlv;
155}
156
157/**
158 * batadv_tvlv_container_list_size - calculate the size of the tvlv container
159 * list entries
160 * @bat_priv: the bat priv with all the soft interface information
161 *
162 * Has to be called with the appropriate locks being acquired
163 * (tvlv.container_list_lock).
164 *
165 * Return: size of all currently registered tvlv containers in bytes.
166 */
167static u16 batadv_tvlv_container_list_size(struct batadv_priv *bat_priv)
168{
169 struct batadv_tvlv_container *tvlv;
170 u16 tvlv_len = 0;
171
172 lockdep_assert_held(&bat_priv->tvlv.container_list_lock);
173
174 hlist_for_each_entry(tvlv, &bat_priv->tvlv.container_list, list) {
175 tvlv_len += sizeof(struct batadv_tvlv_hdr);
176 tvlv_len += ntohs(tvlv->tvlv_hdr.len);
177 }
178
179 return tvlv_len;
180}
181
182/**
183 * batadv_tvlv_container_remove - remove tvlv container from the tvlv container
184 * list
185 * @bat_priv: the bat priv with all the soft interface information
186 * @tvlv: the to be removed tvlv container
187 *
188 * Has to be called with the appropriate locks being acquired
189 * (tvlv.container_list_lock).
190 */
191static void batadv_tvlv_container_remove(struct batadv_priv *bat_priv,
192 struct batadv_tvlv_container *tvlv)
193{
194 lockdep_assert_held(&bat_priv->tvlv.container_list_lock);
195
196 if (!tvlv)
197 return;
198
199 hlist_del(&tvlv->list);
200
201 /* first call to decrement the counter, second call to free */
202 batadv_tvlv_container_put(tvlv);
203 batadv_tvlv_container_put(tvlv);
204}
205
206/**
207 * batadv_tvlv_container_unregister - unregister tvlv container based on the
208 * provided type and version (both need to match)
209 * @bat_priv: the bat priv with all the soft interface information
210 * @type: tvlv container type to unregister
211 * @version: tvlv container type to unregister
212 */
213void batadv_tvlv_container_unregister(struct batadv_priv *bat_priv,
214 u8 type, u8 version)
215{
216 struct batadv_tvlv_container *tvlv;
217
218 spin_lock_bh(&bat_priv->tvlv.container_list_lock);
219 tvlv = batadv_tvlv_container_get(bat_priv, type, version);
220 batadv_tvlv_container_remove(bat_priv, tvlv);
221 spin_unlock_bh(&bat_priv->tvlv.container_list_lock);
222}
223
224/**
225 * batadv_tvlv_container_register - register tvlv type, version and content
226 * to be propagated with each (primary interface) OGM
227 * @bat_priv: the bat priv with all the soft interface information
228 * @type: tvlv container type
229 * @version: tvlv container version
230 * @tvlv_value: tvlv container content
231 * @tvlv_value_len: tvlv container content length
232 *
233 * If a container of the same type and version was already registered the new
234 * content is going to replace the old one.
235 */
236void batadv_tvlv_container_register(struct batadv_priv *bat_priv,
237 u8 type, u8 version,
238 void *tvlv_value, u16 tvlv_value_len)
239{
240 struct batadv_tvlv_container *tvlv_old, *tvlv_new;
241
242 if (!tvlv_value)
243 tvlv_value_len = 0;
244
245 tvlv_new = kzalloc(sizeof(*tvlv_new) + tvlv_value_len, GFP_ATOMIC);
246 if (!tvlv_new)
247 return;
248
249 tvlv_new->tvlv_hdr.version = version;
250 tvlv_new->tvlv_hdr.type = type;
251 tvlv_new->tvlv_hdr.len = htons(tvlv_value_len);
252
253 memcpy(tvlv_new + 1, tvlv_value, ntohs(tvlv_new->tvlv_hdr.len));
254 INIT_HLIST_NODE(&tvlv_new->list);
255 kref_init(&tvlv_new->refcount);
256
257 spin_lock_bh(&bat_priv->tvlv.container_list_lock);
258 tvlv_old = batadv_tvlv_container_get(bat_priv, type, version);
259 batadv_tvlv_container_remove(bat_priv, tvlv_old);
260 hlist_add_head(&tvlv_new->list, &bat_priv->tvlv.container_list);
261 spin_unlock_bh(&bat_priv->tvlv.container_list_lock);
262}
263
264/**
265 * batadv_tvlv_realloc_packet_buff - reallocate packet buffer to accommodate
266 * requested packet size
267 * @packet_buff: packet buffer
268 * @packet_buff_len: packet buffer size
269 * @min_packet_len: requested packet minimum size
270 * @additional_packet_len: requested additional packet size on top of minimum
271 * size
272 *
273 * Return: true of the packet buffer could be changed to the requested size,
274 * false otherwise.
275 */
276static bool batadv_tvlv_realloc_packet_buff(unsigned char **packet_buff,
277 int *packet_buff_len,
278 int min_packet_len,
279 int additional_packet_len)
280{
281 unsigned char *new_buff;
282
283 new_buff = kmalloc(min_packet_len + additional_packet_len, GFP_ATOMIC);
284
285 /* keep old buffer if kmalloc should fail */
286 if (!new_buff)
287 return false;
288
289 memcpy(new_buff, *packet_buff, min_packet_len);
290 kfree(*packet_buff);
291 *packet_buff = new_buff;
292 *packet_buff_len = min_packet_len + additional_packet_len;
293
294 return true;
295}
296
297/**
298 * batadv_tvlv_container_ogm_append - append tvlv container content to given
299 * OGM packet buffer
300 * @bat_priv: the bat priv with all the soft interface information
301 * @packet_buff: ogm packet buffer
302 * @packet_buff_len: ogm packet buffer size including ogm header and tvlv
303 * content
304 * @packet_min_len: ogm header size to be preserved for the OGM itself
305 *
306 * The ogm packet might be enlarged or shrunk depending on the current size
307 * and the size of the to-be-appended tvlv containers.
308 *
309 * Return: size of all appended tvlv containers in bytes.
310 */
311u16 batadv_tvlv_container_ogm_append(struct batadv_priv *bat_priv,
312 unsigned char **packet_buff,
313 int *packet_buff_len, int packet_min_len)
314{
315 struct batadv_tvlv_container *tvlv;
316 struct batadv_tvlv_hdr *tvlv_hdr;
317 u16 tvlv_value_len;
318 void *tvlv_value;
319 bool ret;
320
321 spin_lock_bh(&bat_priv->tvlv.container_list_lock);
322 tvlv_value_len = batadv_tvlv_container_list_size(bat_priv);
323
324 ret = batadv_tvlv_realloc_packet_buff(packet_buff, packet_buff_len,
325 packet_min_len, tvlv_value_len);
326
327 if (!ret)
328 goto end;
329
330 if (!tvlv_value_len)
331 goto end;
332
333 tvlv_value = (*packet_buff) + packet_min_len;
334
335 hlist_for_each_entry(tvlv, &bat_priv->tvlv.container_list, list) {
336 tvlv_hdr = tvlv_value;
337 tvlv_hdr->type = tvlv->tvlv_hdr.type;
338 tvlv_hdr->version = tvlv->tvlv_hdr.version;
339 tvlv_hdr->len = tvlv->tvlv_hdr.len;
340 tvlv_value = tvlv_hdr + 1;
341 memcpy(tvlv_value, tvlv + 1, ntohs(tvlv->tvlv_hdr.len));
342 tvlv_value = (u8 *)tvlv_value + ntohs(tvlv->tvlv_hdr.len);
343 }
344
345end:
346 spin_unlock_bh(&bat_priv->tvlv.container_list_lock);
347 return tvlv_value_len;
348}
349
350/**
351 * batadv_tvlv_call_handler - parse the given tvlv buffer to call the
352 * appropriate handlers
353 * @bat_priv: the bat priv with all the soft interface information
354 * @tvlv_handler: tvlv callback function handling the tvlv content
355 * @ogm_source: flag indicating whether the tvlv is an ogm or a unicast packet
356 * @orig_node: orig node emitting the ogm packet
357 * @src: source mac address of the unicast packet
358 * @dst: destination mac address of the unicast packet
359 * @tvlv_value: tvlv content
360 * @tvlv_value_len: tvlv content length
361 *
362 * Return: success if handler was not found or the return value of the handler
363 * callback.
364 */
365static int batadv_tvlv_call_handler(struct batadv_priv *bat_priv,
366 struct batadv_tvlv_handler *tvlv_handler,
367 bool ogm_source,
368 struct batadv_orig_node *orig_node,
369 u8 *src, u8 *dst,
370 void *tvlv_value, u16 tvlv_value_len)
371{
372 if (!tvlv_handler)
373 return NET_RX_SUCCESS;
374
375 if (ogm_source) {
376 if (!tvlv_handler->ogm_handler)
377 return NET_RX_SUCCESS;
378
379 if (!orig_node)
380 return NET_RX_SUCCESS;
381
382 tvlv_handler->ogm_handler(bat_priv, orig_node,
383 BATADV_NO_FLAGS,
384 tvlv_value, tvlv_value_len);
385 tvlv_handler->flags |= BATADV_TVLV_HANDLER_OGM_CALLED;
386 } else {
387 if (!src)
388 return NET_RX_SUCCESS;
389
390 if (!dst)
391 return NET_RX_SUCCESS;
392
393 if (!tvlv_handler->unicast_handler)
394 return NET_RX_SUCCESS;
395
396 return tvlv_handler->unicast_handler(bat_priv, src,
397 dst, tvlv_value,
398 tvlv_value_len);
399 }
400
401 return NET_RX_SUCCESS;
402}
403
404/**
405 * batadv_tvlv_containers_process - parse the given tvlv buffer to call the
406 * appropriate handlers
407 * @bat_priv: the bat priv with all the soft interface information
408 * @ogm_source: flag indicating whether the tvlv is an ogm or a unicast packet
409 * @orig_node: orig node emitting the ogm packet
410 * @src: source mac address of the unicast packet
411 * @dst: destination mac address of the unicast packet
412 * @tvlv_value: tvlv content
413 * @tvlv_value_len: tvlv content length
414 *
415 * Return: success when processing an OGM or the return value of all called
416 * handler callbacks.
417 */
418int batadv_tvlv_containers_process(struct batadv_priv *bat_priv,
419 bool ogm_source,
420 struct batadv_orig_node *orig_node,
421 u8 *src, u8 *dst,
422 void *tvlv_value, u16 tvlv_value_len)
423{
424 struct batadv_tvlv_handler *tvlv_handler;
425 struct batadv_tvlv_hdr *tvlv_hdr;
426 u16 tvlv_value_cont_len;
427 u8 cifnotfound = BATADV_TVLV_HANDLER_OGM_CIFNOTFND;
428 int ret = NET_RX_SUCCESS;
429
430 while (tvlv_value_len >= sizeof(*tvlv_hdr)) {
431 tvlv_hdr = tvlv_value;
432 tvlv_value_cont_len = ntohs(tvlv_hdr->len);
433 tvlv_value = tvlv_hdr + 1;
434 tvlv_value_len -= sizeof(*tvlv_hdr);
435
436 if (tvlv_value_cont_len > tvlv_value_len)
437 break;
438
439 tvlv_handler = batadv_tvlv_handler_get(bat_priv,
440 tvlv_hdr->type,
441 tvlv_hdr->version);
442
443 ret |= batadv_tvlv_call_handler(bat_priv, tvlv_handler,
444 ogm_source, orig_node,
445 src, dst, tvlv_value,
446 tvlv_value_cont_len);
447 if (tvlv_handler)
448 batadv_tvlv_handler_put(tvlv_handler);
449 tvlv_value = (u8 *)tvlv_value + tvlv_value_cont_len;
450 tvlv_value_len -= tvlv_value_cont_len;
451 }
452
453 if (!ogm_source)
454 return ret;
455
456 rcu_read_lock();
457 hlist_for_each_entry_rcu(tvlv_handler,
458 &bat_priv->tvlv.handler_list, list) {
459 if ((tvlv_handler->flags & BATADV_TVLV_HANDLER_OGM_CIFNOTFND) &&
460 !(tvlv_handler->flags & BATADV_TVLV_HANDLER_OGM_CALLED))
461 tvlv_handler->ogm_handler(bat_priv, orig_node,
462 cifnotfound, NULL, 0);
463
464 tvlv_handler->flags &= ~BATADV_TVLV_HANDLER_OGM_CALLED;
465 }
466 rcu_read_unlock();
467
468 return NET_RX_SUCCESS;
469}
470
471/**
472 * batadv_tvlv_ogm_receive - process an incoming ogm and call the appropriate
473 * handlers
474 * @bat_priv: the bat priv with all the soft interface information
475 * @batadv_ogm_packet: ogm packet containing the tvlv containers
476 * @orig_node: orig node emitting the ogm packet
477 */
478void batadv_tvlv_ogm_receive(struct batadv_priv *bat_priv,
479 struct batadv_ogm_packet *batadv_ogm_packet,
480 struct batadv_orig_node *orig_node)
481{
482 void *tvlv_value;
483 u16 tvlv_value_len;
484
485 if (!batadv_ogm_packet)
486 return;
487
488 tvlv_value_len = ntohs(batadv_ogm_packet->tvlv_len);
489 if (!tvlv_value_len)
490 return;
491
492 tvlv_value = batadv_ogm_packet + 1;
493
494 batadv_tvlv_containers_process(bat_priv, true, orig_node, NULL, NULL,
495 tvlv_value, tvlv_value_len);
496}
497
498/**
499 * batadv_tvlv_handler_register - register tvlv handler based on the provided
500 * type and version (both need to match) for ogm tvlv payload and/or unicast
501 * payload
502 * @bat_priv: the bat priv with all the soft interface information
503 * @optr: ogm tvlv handler callback function. This function receives the orig
504 * node, flags and the tvlv content as argument to process.
505 * @uptr: unicast tvlv handler callback function. This function receives the
506 * source & destination of the unicast packet as well as the tvlv content
507 * to process.
508 * @type: tvlv handler type to be registered
509 * @version: tvlv handler version to be registered
510 * @flags: flags to enable or disable TVLV API behavior
511 */
512void batadv_tvlv_handler_register(struct batadv_priv *bat_priv,
513 void (*optr)(struct batadv_priv *bat_priv,
514 struct batadv_orig_node *orig,
515 u8 flags,
516 void *tvlv_value,
517 u16 tvlv_value_len),
518 int (*uptr)(struct batadv_priv *bat_priv,
519 u8 *src, u8 *dst,
520 void *tvlv_value,
521 u16 tvlv_value_len),
522 u8 type, u8 version, u8 flags)
523{
524 struct batadv_tvlv_handler *tvlv_handler;
525
526 tvlv_handler = batadv_tvlv_handler_get(bat_priv, type, version);
527 if (tvlv_handler) {
528 batadv_tvlv_handler_put(tvlv_handler);
529 return;
530 }
531
532 tvlv_handler = kzalloc(sizeof(*tvlv_handler), GFP_ATOMIC);
533 if (!tvlv_handler)
534 return;
535
536 tvlv_handler->ogm_handler = optr;
537 tvlv_handler->unicast_handler = uptr;
538 tvlv_handler->type = type;
539 tvlv_handler->version = version;
540 tvlv_handler->flags = flags;
541 kref_init(&tvlv_handler->refcount);
542 INIT_HLIST_NODE(&tvlv_handler->list);
543
544 spin_lock_bh(&bat_priv->tvlv.handler_list_lock);
545 hlist_add_head_rcu(&tvlv_handler->list, &bat_priv->tvlv.handler_list);
546 spin_unlock_bh(&bat_priv->tvlv.handler_list_lock);
547}
548
549/**
550 * batadv_tvlv_handler_unregister - unregister tvlv handler based on the
551 * provided type and version (both need to match)
552 * @bat_priv: the bat priv with all the soft interface information
553 * @type: tvlv handler type to be unregistered
554 * @version: tvlv handler version to be unregistered
555 */
556void batadv_tvlv_handler_unregister(struct batadv_priv *bat_priv,
557 u8 type, u8 version)
558{
559 struct batadv_tvlv_handler *tvlv_handler;
560
561 tvlv_handler = batadv_tvlv_handler_get(bat_priv, type, version);
562 if (!tvlv_handler)
563 return;
564
565 batadv_tvlv_handler_put(tvlv_handler);
566 spin_lock_bh(&bat_priv->tvlv.handler_list_lock);
567 hlist_del_rcu(&tvlv_handler->list);
568 spin_unlock_bh(&bat_priv->tvlv.handler_list_lock);
569 batadv_tvlv_handler_put(tvlv_handler);
570}
571
572/**
573 * batadv_tvlv_unicast_send - send a unicast packet with tvlv payload to the
574 * specified host
575 * @bat_priv: the bat priv with all the soft interface information
576 * @src: source mac address of the unicast packet
577 * @dst: destination mac address of the unicast packet
578 * @type: tvlv type
579 * @version: tvlv version
580 * @tvlv_value: tvlv content
581 * @tvlv_value_len: tvlv content length
582 */
583void batadv_tvlv_unicast_send(struct batadv_priv *bat_priv, u8 *src,
584 u8 *dst, u8 type, u8 version,
585 void *tvlv_value, u16 tvlv_value_len)
586{
587 struct batadv_unicast_tvlv_packet *unicast_tvlv_packet;
588 struct batadv_tvlv_hdr *tvlv_hdr;
589 struct batadv_orig_node *orig_node;
590 struct sk_buff *skb;
591 unsigned char *tvlv_buff;
592 unsigned int tvlv_len;
593 ssize_t hdr_len = sizeof(*unicast_tvlv_packet);
594 int res;
595
596 orig_node = batadv_orig_hash_find(bat_priv, dst);
597 if (!orig_node)
598 return;
599
600 tvlv_len = sizeof(*tvlv_hdr) + tvlv_value_len;
601
602 skb = netdev_alloc_skb_ip_align(NULL, ETH_HLEN + hdr_len + tvlv_len);
603 if (!skb)
604 goto out;
605
606 skb->priority = TC_PRIO_CONTROL;
607 skb_reserve(skb, ETH_HLEN);
608 tvlv_buff = skb_put(skb, sizeof(*unicast_tvlv_packet) + tvlv_len);
609 unicast_tvlv_packet = (struct batadv_unicast_tvlv_packet *)tvlv_buff;
610 unicast_tvlv_packet->packet_type = BATADV_UNICAST_TVLV;
611 unicast_tvlv_packet->version = BATADV_COMPAT_VERSION;
612 unicast_tvlv_packet->ttl = BATADV_TTL;
613 unicast_tvlv_packet->reserved = 0;
614 unicast_tvlv_packet->tvlv_len = htons(tvlv_len);
615 unicast_tvlv_packet->align = 0;
616 ether_addr_copy(unicast_tvlv_packet->src, src);
617 ether_addr_copy(unicast_tvlv_packet->dst, dst);
618
619 tvlv_buff = (unsigned char *)(unicast_tvlv_packet + 1);
620 tvlv_hdr = (struct batadv_tvlv_hdr *)tvlv_buff;
621 tvlv_hdr->version = version;
622 tvlv_hdr->type = type;
623 tvlv_hdr->len = htons(tvlv_value_len);
624 tvlv_buff += sizeof(*tvlv_hdr);
625 memcpy(tvlv_buff, tvlv_value, tvlv_value_len);
626
627 res = batadv_send_skb_to_orig(skb, orig_node, NULL);
628 if (res == -1)
629 kfree_skb(skb);
630out:
631 batadv_orig_node_put(orig_node);
632}
diff --git a/net/batman-adv/tvlv.h b/net/batman-adv/tvlv.h
new file mode 100644
index 000000000000..e4369b547b43
--- /dev/null
+++ b/net/batman-adv/tvlv.h
@@ -0,0 +1,61 @@
1/* Copyright (C) 2007-2016 B.A.T.M.A.N. contributors:
2 *
3 * Marek Lindner, Simon Wunderlich
4 *
5 * This program is free software; you can redistribute it and/or
6 * modify it under the terms of version 2 of the GNU General Public
7 * License as published by the Free Software Foundation.
8 *
9 * This program is distributed in the hope that it will be useful, but
10 * WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * General Public License for more details.
13 *
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, see <http://www.gnu.org/licenses/>.
16 */
17
18#ifndef _NET_BATMAN_ADV_TVLV_H_
19#define _NET_BATMAN_ADV_TVLV_H_
20
21#include "main.h"
22
23#include <linux/types.h>
24
25struct batadv_ogm_packet;
26
27void batadv_tvlv_container_register(struct batadv_priv *bat_priv,
28 u8 type, u8 version,
29 void *tvlv_value, u16 tvlv_value_len);
30u16 batadv_tvlv_container_ogm_append(struct batadv_priv *bat_priv,
31 unsigned char **packet_buff,
32 int *packet_buff_len, int packet_min_len);
33void batadv_tvlv_ogm_receive(struct batadv_priv *bat_priv,
34 struct batadv_ogm_packet *batadv_ogm_packet,
35 struct batadv_orig_node *orig_node);
36void batadv_tvlv_container_unregister(struct batadv_priv *bat_priv,
37 u8 type, u8 version);
38
39void batadv_tvlv_handler_register(struct batadv_priv *bat_priv,
40 void (*optr)(struct batadv_priv *bat_priv,
41 struct batadv_orig_node *orig,
42 u8 flags,
43 void *tvlv_value,
44 u16 tvlv_value_len),
45 int (*uptr)(struct batadv_priv *bat_priv,
46 u8 *src, u8 *dst,
47 void *tvlv_value,
48 u16 tvlv_value_len),
49 u8 type, u8 version, u8 flags);
50void batadv_tvlv_handler_unregister(struct batadv_priv *bat_priv,
51 u8 type, u8 version);
52int batadv_tvlv_containers_process(struct batadv_priv *bat_priv,
53 bool ogm_source,
54 struct batadv_orig_node *orig_node,
55 u8 *src, u8 *dst,
56 void *tvlv_buff, u16 tvlv_buff_len);
57void batadv_tvlv_unicast_send(struct batadv_priv *bat_priv, u8 *src,
58 u8 *dst, u8 type, u8 version,
59 void *tvlv_value, u16 tvlv_value_len);
60
61#endif /* _NET_BATMAN_ADV_TVLV_H_ */
diff --git a/net/batman-adv/types.h b/net/batman-adv/types.h
index 02e22763a880..43db7b61f8eb 100644
--- a/net/batman-adv/types.h
+++ b/net/batman-adv/types.h
@@ -33,6 +33,7 @@
33#include <linux/types.h> 33#include <linux/types.h>
34#include <linux/wait.h> 34#include <linux/wait.h>
35#include <linux/workqueue.h> 35#include <linux/workqueue.h>
36#include <uapi/linux/batman_adv.h>
36 37
37#include "packet.h" 38#include "packet.h"
38 39
@@ -833,6 +834,111 @@ struct batadv_priv_nc {
833}; 834};
834 835
835/** 836/**
837 * struct batadv_tp_unacked - unacked packet meta-information
838 * @seqno: seqno of the unacked packet
839 * @len: length of the packet
840 * @list: list node for batadv_tp_vars::unacked_list
841 *
842 * This struct is supposed to represent a buffer unacked packet. However, since
843 * the purpose of the TP meter is to count the traffic only, there is no need to
844 * store the entire sk_buff, the starting offset and the length are enough
845 */
846struct batadv_tp_unacked {
847 u32 seqno;
848 u16 len;
849 struct list_head list;
850};
851
852/**
853 * enum batadv_tp_meter_role - Modus in tp meter session
854 * @BATADV_TP_RECEIVER: Initialized as receiver
855 * @BATADV_TP_SENDER: Initialized as sender
856 */
857enum batadv_tp_meter_role {
858 BATADV_TP_RECEIVER,
859 BATADV_TP_SENDER
860};
861
862/**
863 * struct batadv_tp_vars - tp meter private variables per session
864 * @list: list node for bat_priv::tp_list
865 * @timer: timer for ack (receiver) and retry (sender)
866 * @bat_priv: pointer to the mesh object
867 * @start_time: start time in jiffies
868 * @other_end: mac address of remote
869 * @role: receiver/sender modi
870 * @sending: sending binary semaphore: 1 if sending, 0 is not
871 * @reason: reason for a stopped session
872 * @finish_work: work item for the finishing procedure
873 * @test_length: test length in milliseconds
874 * @session: TP session identifier
875 * @icmp_uid: local ICMP "socket" index
876 * @dec_cwnd: decimal part of the cwnd used during linear growth
877 * @cwnd: current size of the congestion window
878 * @cwnd_lock: lock do protect @cwnd & @dec_cwnd
879 * @ss_threshold: Slow Start threshold. Once cwnd exceeds this value the
880 * connection switches to the Congestion Avoidance state
881 * @last_acked: last acked byte
882 * @last_sent: last sent byte, not yet acked
883 * @tot_sent: amount of data sent/ACKed so far
884 * @dup_acks: duplicate ACKs counter
885 * @fast_recovery: true if in Fast Recovery mode
886 * @recover: last sent seqno when entering Fast Recovery
887 * @rto: sender timeout
888 * @srtt: smoothed RTT scaled by 2^3
889 * @rttvar: RTT variation scaled by 2^2
890 * @more_bytes: waiting queue anchor when waiting for more ack/retry timeout
891 * @prerandom_offset: offset inside the prerandom buffer
892 * @prerandom_lock: spinlock protecting access to prerandom_offset
893 * @last_recv: last in-order received packet
894 * @unacked_list: list of unacked packets (meta-info only)
895 * @unacked_lock: protect unacked_list
896 * @last_recv_time: time time (jiffies) a msg was received
897 * @refcount: number of context where the object is used
898 * @rcu: struct used for freeing in an RCU-safe manner
899 */
900struct batadv_tp_vars {
901 struct hlist_node list;
902 struct timer_list timer;
903 struct batadv_priv *bat_priv;
904 unsigned long start_time;
905 u8 other_end[ETH_ALEN];
906 enum batadv_tp_meter_role role;
907 atomic_t sending;
908 enum batadv_tp_meter_reason reason;
909 struct delayed_work finish_work;
910 u32 test_length;
911 u8 session[2];
912 u8 icmp_uid;
913
914 /* sender variables */
915 u16 dec_cwnd;
916 u32 cwnd;
917 spinlock_t cwnd_lock; /* Protects cwnd & dec_cwnd */
918 u32 ss_threshold;
919 atomic_t last_acked;
920 u32 last_sent;
921 atomic64_t tot_sent;
922 atomic_t dup_acks;
923 bool fast_recovery;
924 u32 recover;
925 u32 rto;
926 u32 srtt;
927 u32 rttvar;
928 wait_queue_head_t more_bytes;
929 u32 prerandom_offset;
930 spinlock_t prerandom_lock; /* Protects prerandom_offset */
931
932 /* receiver variables */
933 u32 last_recv;
934 struct list_head unacked_list;
935 spinlock_t unacked_lock; /* Protects unacked_list */
936 unsigned long last_recv_time;
937 struct kref refcount;
938 struct rcu_head rcu;
939};
940
941/**
836 * struct batadv_softif_vlan - per VLAN attributes set 942 * struct batadv_softif_vlan - per VLAN attributes set
837 * @bat_priv: pointer to the mesh object 943 * @bat_priv: pointer to the mesh object
838 * @vid: VLAN identifier 944 * @vid: VLAN identifier
@@ -900,14 +1006,17 @@ struct batadv_priv_bat_v {
900 * @debug_dir: dentry for debugfs batman-adv subdirectory 1006 * @debug_dir: dentry for debugfs batman-adv subdirectory
901 * @forw_bat_list: list of aggregated OGMs that will be forwarded 1007 * @forw_bat_list: list of aggregated OGMs that will be forwarded
902 * @forw_bcast_list: list of broadcast packets that will be rebroadcasted 1008 * @forw_bcast_list: list of broadcast packets that will be rebroadcasted
1009 * @tp_list: list of tp sessions
1010 * @tp_num: number of currently active tp sessions
903 * @orig_hash: hash table containing mesh participants (orig nodes) 1011 * @orig_hash: hash table containing mesh participants (orig nodes)
904 * @forw_bat_list_lock: lock protecting forw_bat_list 1012 * @forw_bat_list_lock: lock protecting forw_bat_list
905 * @forw_bcast_list_lock: lock protecting forw_bcast_list 1013 * @forw_bcast_list_lock: lock protecting forw_bcast_list
1014 * @tp_list_lock: spinlock protecting @tp_list
906 * @orig_work: work queue callback item for orig node purging 1015 * @orig_work: work queue callback item for orig node purging
907 * @cleanup_work: work queue callback item for soft-interface deinit 1016 * @cleanup_work: work queue callback item for soft-interface deinit
908 * @primary_if: one of the hard-interfaces assigned to this mesh interface 1017 * @primary_if: one of the hard-interfaces assigned to this mesh interface
909 * becomes the primary interface 1018 * becomes the primary interface
910 * @bat_algo_ops: routing algorithm used by this mesh interface 1019 * @algo_ops: routing algorithm used by this mesh interface
911 * @softif_vlan_list: a list of softif_vlan structs, one per VLAN created on top 1020 * @softif_vlan_list: a list of softif_vlan structs, one per VLAN created on top
912 * of the mesh interface represented by this object 1021 * of the mesh interface represented by this object
913 * @softif_vlan_list_lock: lock protecting softif_vlan_list 1022 * @softif_vlan_list_lock: lock protecting softif_vlan_list
@@ -956,13 +1065,16 @@ struct batadv_priv {
956 struct dentry *debug_dir; 1065 struct dentry *debug_dir;
957 struct hlist_head forw_bat_list; 1066 struct hlist_head forw_bat_list;
958 struct hlist_head forw_bcast_list; 1067 struct hlist_head forw_bcast_list;
1068 struct hlist_head tp_list;
959 struct batadv_hashtable *orig_hash; 1069 struct batadv_hashtable *orig_hash;
960 spinlock_t forw_bat_list_lock; /* protects forw_bat_list */ 1070 spinlock_t forw_bat_list_lock; /* protects forw_bat_list */
961 spinlock_t forw_bcast_list_lock; /* protects forw_bcast_list */ 1071 spinlock_t forw_bcast_list_lock; /* protects forw_bcast_list */
1072 spinlock_t tp_list_lock; /* protects tp_list */
1073 atomic_t tp_num;
962 struct delayed_work orig_work; 1074 struct delayed_work orig_work;
963 struct work_struct cleanup_work; 1075 struct work_struct cleanup_work;
964 struct batadv_hard_iface __rcu *primary_if; /* rcu protected pointer */ 1076 struct batadv_hard_iface __rcu *primary_if; /* rcu protected pointer */
965 struct batadv_algo_ops *bat_algo_ops; 1077 struct batadv_algo_ops *algo_ops;
966 struct hlist_head softif_vlan_list; 1078 struct hlist_head softif_vlan_list;
967 spinlock_t softif_vlan_list_lock; /* protects softif_vlan_list */ 1079 spinlock_t softif_vlan_list_lock; /* protects softif_vlan_list */
968#ifdef CONFIG_BATMAN_ADV_BLA 1080#ifdef CONFIG_BATMAN_ADV_BLA
@@ -1278,59 +1390,77 @@ struct batadv_forw_packet {
1278}; 1390};
1279 1391
1280/** 1392/**
1393 * struct batadv_algo_iface_ops - mesh algorithm callbacks (interface specific)
1394 * @activate: start routing mechanisms when hard-interface is brought up
1395 * @enable: init routing info when hard-interface is enabled
1396 * @disable: de-init routing info when hard-interface is disabled
1397 * @update_mac: (re-)init mac addresses of the protocol information
1398 * belonging to this hard-interface
1399 * @primary_set: called when primary interface is selected / changed
1400 */
1401struct batadv_algo_iface_ops {
1402 void (*activate)(struct batadv_hard_iface *hard_iface);
1403 int (*enable)(struct batadv_hard_iface *hard_iface);
1404 void (*disable)(struct batadv_hard_iface *hard_iface);
1405 void (*update_mac)(struct batadv_hard_iface *hard_iface);
1406 void (*primary_set)(struct batadv_hard_iface *hard_iface);
1407};
1408
1409/**
1410 * struct batadv_algo_neigh_ops - mesh algorithm callbacks (neighbour specific)
1411 * @hardif_init: called on creation of single hop entry
1412 * @cmp: compare the metrics of two neighbors for their respective outgoing
1413 * interfaces
1414 * @is_similar_or_better: check if neigh1 is equally similar or better than
1415 * neigh2 for their respective outgoing interface from the metric prospective
1416 * @print: print the single hop neighbor list (optional)
1417 */
1418struct batadv_algo_neigh_ops {
1419 void (*hardif_init)(struct batadv_hardif_neigh_node *neigh);
1420 int (*cmp)(struct batadv_neigh_node *neigh1,
1421 struct batadv_hard_iface *if_outgoing1,
1422 struct batadv_neigh_node *neigh2,
1423 struct batadv_hard_iface *if_outgoing2);
1424 bool (*is_similar_or_better)(struct batadv_neigh_node *neigh1,
1425 struct batadv_hard_iface *if_outgoing1,
1426 struct batadv_neigh_node *neigh2,
1427 struct batadv_hard_iface *if_outgoing2);
1428 void (*print)(struct batadv_priv *priv, struct seq_file *seq);
1429};
1430
1431/**
1432 * struct batadv_algo_orig_ops - mesh algorithm callbacks (originator specific)
1433 * @free: free the resources allocated by the routing algorithm for an orig_node
1434 * object
1435 * @add_if: ask the routing algorithm to apply the needed changes to the
1436 * orig_node due to a new hard-interface being added into the mesh
1437 * @del_if: ask the routing algorithm to apply the needed changes to the
1438 * orig_node due to an hard-interface being removed from the mesh
1439 * @print: print the originator table (optional)
1440 */
1441struct batadv_algo_orig_ops {
1442 void (*free)(struct batadv_orig_node *orig_node);
1443 int (*add_if)(struct batadv_orig_node *orig_node, int max_if_num);
1444 int (*del_if)(struct batadv_orig_node *orig_node, int max_if_num,
1445 int del_if_num);
1446 void (*print)(struct batadv_priv *priv, struct seq_file *seq,
1447 struct batadv_hard_iface *hard_iface);
1448};
1449
1450/**
1281 * struct batadv_algo_ops - mesh algorithm callbacks 1451 * struct batadv_algo_ops - mesh algorithm callbacks
1282 * @list: list node for the batadv_algo_list 1452 * @list: list node for the batadv_algo_list
1283 * @name: name of the algorithm 1453 * @name: name of the algorithm
1284 * @bat_iface_activate: start routing mechanisms when hard-interface is brought 1454 * @iface: callbacks related to interface handling
1285 * up 1455 * @neigh: callbacks related to neighbors handling
1286 * @bat_iface_enable: init routing info when hard-interface is enabled 1456 * @orig: callbacks related to originators handling
1287 * @bat_iface_disable: de-init routing info when hard-interface is disabled
1288 * @bat_iface_update_mac: (re-)init mac addresses of the protocol information
1289 * belonging to this hard-interface
1290 * @bat_primary_iface_set: called when primary interface is selected / changed
1291 * @bat_hardif_neigh_init: called on creation of single hop entry
1292 * @bat_neigh_cmp: compare the metrics of two neighbors for their respective
1293 * outgoing interfaces
1294 * @bat_neigh_is_similar_or_better: check if neigh1 is equally similar or
1295 * better than neigh2 for their respective outgoing interface from the metric
1296 * prospective
1297 * @bat_neigh_print: print the single hop neighbor list (optional)
1298 * @bat_orig_print: print the originator table (optional)
1299 * @bat_orig_free: free the resources allocated by the routing algorithm for an
1300 * orig_node object
1301 * @bat_orig_add_if: ask the routing algorithm to apply the needed changes to
1302 * the orig_node due to a new hard-interface being added into the mesh
1303 * @bat_orig_del_if: ask the routing algorithm to apply the needed changes to
1304 * the orig_node due to an hard-interface being removed from the mesh
1305 */ 1457 */
1306struct batadv_algo_ops { 1458struct batadv_algo_ops {
1307 struct hlist_node list; 1459 struct hlist_node list;
1308 char *name; 1460 char *name;
1309 void (*bat_iface_activate)(struct batadv_hard_iface *hard_iface); 1461 struct batadv_algo_iface_ops iface;
1310 int (*bat_iface_enable)(struct batadv_hard_iface *hard_iface); 1462 struct batadv_algo_neigh_ops neigh;
1311 void (*bat_iface_disable)(struct batadv_hard_iface *hard_iface); 1463 struct batadv_algo_orig_ops orig;
1312 void (*bat_iface_update_mac)(struct batadv_hard_iface *hard_iface);
1313 void (*bat_primary_iface_set)(struct batadv_hard_iface *hard_iface);
1314 /* neigh_node handling API */
1315 void (*bat_hardif_neigh_init)(struct batadv_hardif_neigh_node *neigh);
1316 int (*bat_neigh_cmp)(struct batadv_neigh_node *neigh1,
1317 struct batadv_hard_iface *if_outgoing1,
1318 struct batadv_neigh_node *neigh2,
1319 struct batadv_hard_iface *if_outgoing2);
1320 bool (*bat_neigh_is_similar_or_better)
1321 (struct batadv_neigh_node *neigh1,
1322 struct batadv_hard_iface *if_outgoing1,
1323 struct batadv_neigh_node *neigh2,
1324 struct batadv_hard_iface *if_outgoing2);
1325 void (*bat_neigh_print)(struct batadv_priv *priv, struct seq_file *seq);
1326 /* orig_node handling API */
1327 void (*bat_orig_print)(struct batadv_priv *priv, struct seq_file *seq,
1328 struct batadv_hard_iface *hard_iface);
1329 void (*bat_orig_free)(struct batadv_orig_node *orig_node);
1330 int (*bat_orig_add_if)(struct batadv_orig_node *orig_node,
1331 int max_if_num);
1332 int (*bat_orig_del_if)(struct batadv_orig_node *orig_node,
1333 int max_if_num, int del_if_num);
1334}; 1464};
1335 1465
1336/** 1466/**
generated by cgit v1.2.2 (git 2.25.0) at 2025-02-24 23:49:39 -0500